Russian military intervention in the Syrian Civil War
The Russian military intervention in the Syrian Civil War began in September 2015, after an official request by the Syrian government for military aid against rebel and jihadist groups. The intervention initially consisted of air strikes fired by Russian aircraft stationed in the Khmeimim base at targets primarily in north-western Syria, against militant groups opposed to the Syrian government, including Syrian National Coalition, the Islamic State of Iraq and the Levant (ISIL), al-Nusra Front (al-Qaeda in the Levant) and the Army of Conquest. Besides, Russian military advisors and special operations forces were stationed in Syria. Prior to the intervention, Russian involvement in the Syrian Civil War had mainly consisted of supplying the Syrian Army. At the end of December 2017, Russia said its troops would be based in Syria permanently.
Shortly after the operation began, Russian officials were cited as saying that, apart from fighting terrorist organisations such as ISIL, Russia′s goals included helping the Syrian government retake territory from various anti-government groups that are labelled by the U.S. and its coalition as ″moderate opposition″, a broader geopolitical objective being to roll back U.S. influence. In his televised interview broadcast on 11 October 2015, Russian president Vladimir Putin said the military operation had been thoroughly prepared in advance; he defined Russia′s goal in Syria as "stabilising the legitimate power in Syria and creating the conditions for political compromise"
By the end of 2017, the intervention produced significant gains for the Syrian government, including the recapture of Palmyra from ISIL in March 2016, retaking the major city of Aleppo in December 2016, breaking the three-year-long siege of Deir ez-Zor and establishing full control over that city in November 2017. In early January 2017, the Chief of the General Staff of the Russian Armed Forces Valery Gerasimov said that, overall, the Russian aviation had carried out 19,160 combat missions and delivered 71,000 strikes on "the infrastructure of terrorists". At the end of December 2017, the Russian defence minister said that over 48.000 servicemembers had ″gained combat experience″ during the Russian operation in Syria.
The UK-based pro-opposition Syrian Observatory for Human Rights (SOHR) has stated that between the initiation of the intervention in September 2015 and end of February 2016, Russian air strikes have killed at least 1,700 civilians, including more than 200 children. The Syrian Network for Human Rights (SNHR) and the Violations Documentation Centre (VDC) put the number higher, at over 2,000; SNHR's report stated that Russian attacks have killed more civilians than either ISIS or the Syrian Arab Army. Used weapons included unguided bombs, cluster bombs, incendiaries similar to white phosphorus and thermobaric weapons. By the end of September 2017, the SOHR stated that Russian airstrikes have killed around 5,703 civilians, about a quarter of them children, along with 4,258 ISIL fighters and 3,893 militants from the Al-Qaeda affiliate al-Nusra Front and other rebel forces.
Background and preparation phase
The Syrian Civil War has been waged since 2011 between multiple opposition (anti-government) groupings and the government as well, as their local and foreign support bases. Since 2014, a significant part of Syria′s territory had been claimed by the Islamic State of Iraq and the Levant, an entity internationally recognised as terrorist. In the north-west of the country, the main opposition faction is the al-Qaeda-affiliated al-Nusra Front, allied with numerous other smaller Islamist groups, some of which operated under the umbrella of the Free Syrian Army (FSA) that was supported and armed by the United States and its regional allies. Since September 2014, the U.S.-led coalition had conducted airstrikes in Syria against ISIL, which was widely seen as unsuccessful in achieving their goals.
According to Russian and Syrian officials, in July 2015, the Syrian President Bashar al-Assad made a formal request to Russia for air strikes combating international terrorism, while laying out Syria's military problems. According to media reports with reference to anonymous sources, after a series of major setbacks suffered by the Syrian government forces in the first half of 2015, a political agreement was reached between Russia and Syria to intensify the Russian involvement; Qasem Soleimani, commander of the Iran′s Quds Force visited Moscow in July to work out the details of the joint campaign (Soleimani′s visit was denied by Russian officials).
On 26 August 2015, a treaty was signed between Russia and Syria that stipulated terms and conditions of use by Russia of Syria's Hmeimim airport, free of charge and with no time limit. The treaty, ratified by Russia′s parliament in October 2016, grants Russia′s personnel and their family members jurisdictional immunity and other privileges as envisaged by Vienna Convention on Diplomatic Relations.
In September 2015, Russia′s warships of the Black Sea Fleet reached the area of eastern Mediterranean.
At the end of September, a joint information centre in Baghdad was set up by Iran, Iraq, Russia and Syria to coordinate their operations against ISIL (in the newsmedia the centre is also referred to as "Joint Operations Room in Baghdad known as the 4 + 1" implying the Lebanese Shia militia Hezbollah, in addition to the 4 states). According to Russian foreign minister Sergey Lavrov′s statement made in mid-October 2015, prior to the start of its operations in Syria, Russia invited the United States to join the Baghdad-based information center but received what he called an "unconstructive" response. According to Alexander Yakovenko, Ambassador of Russia to the United Kingdom, the Russian government received a similar rebuttal from the UK government. In late December 2015, Turkey′s president Recep Erdogan claimed that he had declined Russian president′s offer to join this alliance as he "could not sit alongside a president [Assad] whose legitimacy" was dubious to him".
On 30 September 2015, the upper house of the Russian Federal Assembly, the Federation Council, granted the request by Russian President Vladimir Putin to deploy the Russian Air Force in Syria. On the same day, the Russian representative to the joint information centre arrived at the U.S. Embassy in Baghdad and requested that any United States forces in the targeted area in Syria leave immediately. An hour later, the Russian aircraft based in the government-held territory began conducting airstrikes ostensibly against ISIL and other rebel targets.
Prior to the start of the Russian operation in Syria as well as afterwards, Russian analysts believed that Russia′s military build-up in Syria was aimed inter alia at ending the de facto political and diplomatic isolation that the West had imposed on Putin in connection with the situation in Ukraine.
Operations by Russian military forces
The first series of air strikes took place on 30 September 2015 in areas around the cities of Homs and Hama, targeting the mainstream opposition. Russian warplanes attacked rebel positions "in al-Rastan, Talbiseh and Zafaraniya in Homs province; Al-Tilol al-Hmer in Quneitra province; Aydoun, a village on the outskirts of the town of Salamiyah; Deer Foul, between Hama and Homs; and the outskirts of Salamiyah". In total, 20 flights were made. Most of the initial airstrikes targeted positions of the Chechen fighters, Islamic Front's Jaysh al-Islam (Army of Islam), and Free Syrian Army.
According to Hezbollah media outlet Al Mayadeen, the Saudi/Turkish-backed Army of Conquest around Jisr ash-Shugour was bombed on 1 October by Russian planes; at least 30 air strikes were carried out. Another series of Russian airstrikes carried out that same day hit ISIL positions in Raqqa governorate.
In the morning of 2 October, the Russian air force launched four airstrikes on ISIL in the ancient Syriac city of Al-Qaryatayn, and the T4-Palmyra highway, Homs province. An ISIL command and control center was destroyed in a single airstrike in Al-Qaryatayn, while an ISIL convoy on their way to the Teefor-Palmyra highway was attacked. Following the airstrikes, the Syrian Army and National Defence Forces pushed ISIL out of the town of Mheen towards Al-Qaryatayn after a two-hour engagement that killed 18 militants and destroyed two technicals mounted with ZU-23-2s. Syrian forces then launched a counter-attack south-west of Al-Qaryatayn to recover the main road.
In the same day, the Russian Air Force began bombing Al-Nusra Front positions in al-Rastan and Talbiseh in the Homs province. Later, they proceeded with bombing Al-Nusra in Kafr Zita, Al-Ghaab Plains, Kafr Nabl, Kafr Sijnah, and Al-Rakaya in the Hama province. The Syrian Air Force and the Russian Air Force jointly bombed Al-Nusra in Jisr al-Shughur. At night, the Russian Air Force targeted ISIL with 11 airstrikes over Raqqa while targeting electrical grids outside it, two airstrikes over Shadadi-Hasakah highway, and three airstrikes in Mayadin, Deir ez-Zor province. The primary ISIL military base in Tabaqa Military Airport was also attacked, with the barracks being destroyed in two airstrikes. Near the Military Airport, an ISIL weapons supply depot in Al-'Ajrawi Farms was also bombed. At the same time, the ISIL primary headquarters in Tabaqa National Hospital was heavily damaged in a Russian airstrike, according to pro-government sources. In Al-Hasakah province, the Russian Air Force targeted ISIL in Al-Shadadi and Al-Houl, while the Syrian Air Force attacked an ISIL convoy along the Deir ez-Zor-Hasakah highway.
On 3 October, reports indicated that Hezbollah and Iranian fighters were preparing major ground offensives to be coordinated with Russian airstrikes. According to CNN, the Russian defense ministry said its soldiers bombed nine ISIL positions near the group's de facto capital in Raqqa. At least 11 were killed in an alleged double strike by Russia in Syria's Idlib province, according to opposition groups. During the day, the Russian Air Force made four airstrikes over Al-Nusra controlled Jisr al-Shughur, and additional ones in Jabal Al-Zawiya, and Jabal al-Akrad. One of the targets was an Al-Nusra reinforcement convoy heading from Jisr al-Shughur to the northeast countryside of Latakia province.
On the morning of 7 October 2015, according to the Russian officials, four warships from the Russian Navy's Caspian Flotilla launched 26 3M-14T from Kalibr-NK system cruise missiles that hit 11 targets within Syrian territory. The missiles passed through Iranian and Iraqi airspace in order to reach their targets at a distance of well over about 1,500 kilometers (930 miles). The same day, Syrian ground forces were reported to carry out an offensive under Russian air cover. According to CNN citing unnamed United States military and intelligence officials, 4 of 26 cruise missiles on 8 October crashed in Iran, well before reaching their targets in Syria. Russia claimed all of its missiles hit their targets. Iran also denied any missile crash on its territory. Iranian defence ministry rejected any reports alleging that four of the 26 cruise missiles crashed in Iran saying the CNN reports are part of the West's "psychological warfare".
On 8 October 2015, the number of air raids increased significantly up to over 60 sorties a day, a tempo maintained for the next 2 days.  The Russian defense ministry announced on 9 October that up to sixty ISIL targets were hit in the past 24 hours, supposedly killing 300 militants in the most intense strikes so far. One of the raids targeted a Liwa al-Haqq base in the Raqqa Governorate using KAB-500KR precision-guided bombs, in which allegedly two senior ISIL commanders and up to 200 militants were killed, despite the lack of any connection between Liwa al-Haqq and ISIL. Another assault destroyed a former prison near Aleppo that was used by ISIL as a base and munitions depot, also killing scores of militants. Rebel training sites in the Latakia and Idlib provinces were allegedly hit as well. Meanwhile, ISIL militants made advances in the Aleppo area on 9 October, seizing several villages, including Tal Qrah, Tal Sousin, and Kfar Qares, in what the Associated Press called a "lightning attack". The attacks were unencumbered by either Russian or United States-led coalition airstrikes. The ISIL advance came at the expense of rebel groups also targeted by Russian and Syrian forces. In mid-October 2015, a joint Russian-Syrian-Iranian-Hezbollah offensive targeting rebels in Aleppo went ahead. According to citizen journalist group Raqqa Is Being Slaughtered Silently, who started out opposing the Syrian Government, Russia lied about targeting ISIL in the early airstrikes and missiles around Raqqa. Between 17 September and 13 October they counted 36 Russian strikes against only 2 ISIL targets (with 4 ISIL deaths) and 22 civilian targets (with 70 civilian deaths plus injuries) included hospitals, a fire hall, at least one school and a highway fueling station.
On 17 November 2015, in the wake of the Russian jet crash over Sinai and the Paris attacks, according to the Russian defence minister′s public report to the president of Russia Vladimir Putin, Russia employed the Russia-based Tu-160, Tu-95MSM, and Tu-22M3 long range strategic bombers firing air-launched cruise missiles to hit what he claimed were the IS targets in Raqqa, Deir ez-Zor as well as targets in the provinces of Aleppo and Idlib. The Russian minister of defence said that, pursuant to Putin′s orders, the Russian aviation grouping that at the time comprised more than 50 aircraft was intensifying their campaign. Besides, Putin said he had issued orders for the cruiser Moskva that had been in eastern Mediterranean since the start of the Russian operations to "work as with an ally", with the French naval group led by flagship Charles de Gaulle that had been on its way to the eastern Mediterranean since early November. The following day, according to the Russian Defence ministry, strikes by long-range bombers firing cruise missiles in the same areas in Syria continued. The mass cruise missile strikes carried out against ISIS in Deir Ezzor province on 20 November resulted in the death of more than 600 militants according to the ministry.
A Russian Sukhoi Su-24 strike aircraft was shot down by a Turkish Air Force F-16 on 24 November 2015. The pilot was shot and killed by Syrian rebels while descending by parachute, and the weapon systems officer was later rescued by Russian forces. A Russian marine was injured during the rescue operation and later died en route to a medical center. In the video the rebels shout "Allah Akbar" over the dead body of a Russian pilot. According to Turkey's claims presented to the UN Security Council, two planes, whose nationalities were unknown to them at the time, violated Turkish airspace over the Yayladağı province up to 2.19 km (1.36 mi) for 17 seconds. According to Turkey, the planes disregarded the multiple warnings and were subsequently fired upon by Turkish F-16s patrolling the area. After the Turkish fire, one of the planes left Turkish airspace and the other crashed into Syrian territory. The Russian Ministry of Defense denied that any of their planes had violated Turkey's airspace, claiming they had been flying south of the Yayladağı province and provided two maps showing two different alleged routes of the airplane (one of them with "impossible" turns and maneuvers).
The incident followed incremental tensions between Russia and Turkey over alleged repeated violations of Turkish airspace by Russian military jets (one of which Russia admitted) and the Turkish prime minister′s statement of 17 October that Turkey would not hesitate to shoot down airplanes violating its airspace.
Russia in response announced it would deploy additional air defense weapons in the area and accompany its bombers with fighter jets. On 26 November 2015, deployment of S-300 and S-400 anti-aircraft systems was reported by Russia′s official news media, to Latakia and on board the cruiser Moskva.
On 29 November 2015, Russian aircraft were reported to have struck targets in the Syrian Idlib province, including the town of Ariha that had been captured by the Army of Conquest 6 months prior, causing multiple casualties on the ground. Other targets hit included the Turkistan Islamic Party's office in Jisr al-Shughur and a relief office of Ahrar ash-Sham group in the town of Saraqib.
December 2015 – February 2016
On 1 December 2015, The Times, citing local sources and news media, claimed that Russia was preparing to expand its military operations in Syria by opening the al-Shayrat airbase near the city of Homs, already home to Russian attack helicopters and a team that had arrived about a month prior.
On 8 December, the Russian defence minister announced that a Kilo-class submarine, Rostov-on-Don, had launched 3M14K cruise missiles while submerged, against targets in Raqqa Governorate, the first such strike from the Mediterranean Sea. He also reported to the president that pursuant to Putin′s order, since 5 December the Russian military had intensified airstrikes in Syria: it was claimed that over the 3 days, Russian aircraft, including Tu-22M3 strategic bombers, had performed over 300 sorties engaging over 600 targets of different type.
On 11 December, in a televised meeting at the Defence ministry Vladimir Putin ordered the military in Syria to destroy any threatening targets: "I order you to act as tough as possible. Any target that poses a threat to Russian [military] grouping or ground infrastructure has to be destroyed immediately." He also appeared to suggest that the Russian military was now supporting the anti-government Free Syrian Army forces; however, the Kremlin spokesman later clarified that Russia was only supplying weapons to "the legitimate authorities of the Syrian Arab Republic".
On 16 December, Russia′s Defence minister Sergey Shoigu speaking to the members of the State Duma behind closed doors, mentioned a possible option of the Russian forces "reaching the Euphrates" in Syria. On 19 December, Russian president Putin commended the performance of the Russian armed forces in Syria; he said that "so far not all of our capabilities have been used" and that "more military means" might be employed there "if deemed necessary".
On 25 December 2015, Chief of the Main Operational Directorate of the General Staff of the Russian Armed Forces Lt. Gen. Sergey Rudskoy said that since 30 September 2015 Russian air force had conducted 5,240 sorties in Syria, including 145 sorties by long-range aviation. On 27 December 2015, Chief Commander of the Russian Aerospace Force Col. Gen. Viktor Bondarev stated that Russian pilots had never once attacked civilian targets in Syria.
On 30 December 2015, heavy fighting was reported as the Syrian government forces backed by Russian air strikes advanced into the southern city of Al-Shaykh Maskin, which had been held by the rebel Southern Front since the First Battle of Al-Shaykh Maskin in December 2014. The Syrian government′s offensive operation that had started on 28 December 2015 and completed by the end of January 2016 was said to be the government's first major assault in southern Syria since Russia joined the fight.
In early January 2016, regional diplomats who had assumed Moscow had an understanding with Jordan and Israel not to extend into their sphere of influence were reported to be surprised by the growing Russian role in Syria′s south; so were rebels from Syria's Southern Front alliance whose forces are directly supplied by the Military Operations Command, an operations room staffed by Arab and Western military forces, including the US.
On 9 January 2016, Syrian Observatory for Human Rights reported that Russian air strikes in the northwestern town of Maarrat al-Nu'man had killed about 60 persons, including 23 members of the Nusra Front.
In January 2016, the cruiser Varyag was deployed off Syria′s shore replacing sister ship Moskva and was named flagship of the Russian naval task force positioned in the eastern Mediterranean.
Russia′s role was said to be essential in the government′s capture, on 24 January 2016, of the town of Rabia, the last major town held by rebels in western Latakia province. The capture of Rabia, part of the government′s Latakia offensive, was said to threaten rebel supply lines from Turkey.
At the end of January 2016, Russia, for the first time, deployed four Su-35S fighter jets, presumably equipped with the Khibiny electronic countermeasures (ECM) systems, to the Khmeimim base; on 1 February the Russian defence ministry said the aircraft had begun conducting missions in Syria.
A Russian military adviser died in a hospital in Syria on 1 February after suffering severe wounds when a Syrian army training center in Homs Province was shelled.
Speaking shortly after the formal start of the UN-mediated Geneva Syria peace talks on 1 February, Russian foreign minister Sergei Lavrov said Russia would not stop its air strikes until Russia truly defeated "such terrorist organisations as Jabhat al-Nusra and ISIL″.
In early February 2016, intensive Russian strikes contributed to the success of the Syrian army and its allies′ offensive operation to the northwest of Aleppo that severed a major rebel supply line to Turkey.
March 2016–mid-October 2016
On 1 March 2016, Russian foreign minister Sergey Lavrov said that the truce, formally referred to as a "cessation of hostilities", that had been in effect from 27 February 2016 at 00:00 (Damascus time), was largely holding and becoming more stable. According to the state–run RIA Novosti′s report of 1 March 2016, all the planes at the Russian Khmeimim base had been grounded for four days.
On 1 March, the Russian defense ministry said it had deployed to the Khmeimim base additional radars and drones: three sets of surveillance equipment which included drones and two radar stations.
On 14 March 2016, Russian president Vladimir Putin announced that the mission which he had set for the Russian military in Syria was "on the whole accomplished" and ordered withdrawal of the "main part" of the Russian forces from Syria. The move was announced on the day when peace talks on Syria resumed in Geneva. The Russian leader, however, did not give a deadline for the completion of the withdrawal. He also said that both Russian military bases in Syria (naval base in Tartus and airbase in Khmeimim) will continue to operate in "routine mode", as the Russian servicemen there will be engaged in monitoring the ceasefire regime.
In mid-March 2016, intensive operations by the Russian forces resumed to support the Syrian government′s bid to recapture the city of Tadmur that includes the UNESCO World Heritage Site of Palmyra, which were fully recaptured from ISIS on 27 March. Following the recapture of the city, Russian de-mining teams engaged in the clearing of mines planted by ISIS in the ancient site of Palmyra.
In early May 2016, news media reported that Russian ground forces had set up what Jane's Information Group called a ″forward operating base″ (officially a base for the mining crews) just to the west of the city of Tadmur, and installed an air-defence system to protect the site.
In mid-May 2016, Stratfor reported that a Russian air base was attacked and four Russian attack helicopters, 20 supply trucks and one Syrian Mig-25 were destroyed. However, United States media cited intelligence community sources as believing the destruction was caused by an accidental fuel tank explosion, that the Stratfor analysis was wrong and that there were no indications of an ISIS attack on the airport.
On 8 July 2016, a Syrian Mi-25 (a Russian Mi-35, according to other unofficial military sources) was destroyed on the ground from a United States-made BGM-71 TOW east of Palmyra, with two Russian pilots confirmed dead. A few days after, Russia announced it had employed strategic Tu-22M3 bombers, for the first time since the partial ceasefire came into force, to deliver airstrikes on terrorist targets east of the towns of Palmyra and Al-Sukhnah, and the village of Arak.
On 1 August 2016, a Russian Mi-8AMTSh transport helicopter was shot down on its way back to the Khmeimim base from a humanitarian mission to Aleppo by ground fire over Jabhat Fateh al-Sham-controlled area in Idlib province. Three crew members and two officers from the Russian Reconciliation Center for Syria were killed in the crush, then their corpses were desecrated by the rebels arrived on the scene.
Russia′s air force took active part in the Syrian government′s re-newed Aleppo offensive that began in late September 2016, one of the consequences being the U.S. government in early October suspending talks on Syria with Russia. The Russian tactics and weapons used in the offensive have been compared to those used in Grozny against Chechen separatists. The U.S. government publicly accused Russia of ″flagrant violations of international law″ in Syria and urged investiagation of war crimes.
Mid-October 2016–December 2016
On 15 October 2016, the aircraft carrier Admiral Kuznetsov sailed from Kola Bay at the centre of a task group, which included the Kirov-class missile cruiser Pyotr Velikiy, a pair of Udaloy-class destroyers and other vessels, to deploy to the Mediterranean in support of Russian forces operating in Syria. Admiral Kuznetsov's jets were reported to be flying off the Syrian coast on 8 November. On 14 November, a MiG-29K crashed en route back to the carrier following a planned mission over Syria, while an Su-33 crashed, again while trying to recover to Admiral Kuznetsov following a sortie on 5 December.
On 17 November 2016, the Russian ministry of defence said that three "well-known" commanders of Al-Qaeda's Syria affiliate formerly known as Al-Nusra Front, among other "terrorists", had been killed in Russian strikes fired by Su-33 fighter jets based on Admiral Kuznetsov, in the province of Idlib. Other ships as well as K-300P Bastion-P were also reported to have taken part in a renewed bombing campaign, after a partial hiatus in the raids since 18 October.
In late November, satellite images emerged showing several of Admiral Kuznetsov's fixed wing aircraft operating from Hmeimim Air Base in Latakia, with suggestions made that the number of sorties flown from the carrier is less than has been suggested by the Russian Ministry of Defence. Problems with the ship's arrestor cables was cited as being part of the reason for the crash of the MiG-29K, which was circling the ship when it suffered an engine failure. At around the same time, an image was released by the Dutch frigate HNLMS De Ruyter showing the Nanuchka-class corvette Mirazh being towed back to the Black Sea.
January 2017–June 2017
On 6 January, the Russian Defense Ministry, with a reference to a Moscow/Ankara-brokered ceasefire effective as of 30 December 2016, announced the start of a drawdown of its forces from Syria, pursuant to a decision taken by President Putin; the first element scheduled to depart the region was announced to be the Admiral Kuznetsov battle group. However, five days afterwards, a Fox News report cited ″two U.S. officials″ as saying that additional attack aircraft had been deployed by Russia to its airbase in Syria, namely four Su-25 jets had arrived on 9 January.
On 20 March it was reported that Russia set up a training base in Afrin canton to train YPG units in order to combat terrorism, however there were conflicting reports about where this base was set up, with Reuters reporting it was in Jandairis and pro-government Al Masdar News locating it in the village of Kafr Jannah. At various times, Afrin was the target of artillery shelling by Islamist rebel groups as well as by Turkey. In response, Russian troops reportedly stationed themselves in Afrin as part of an agreement to protect the YPG from further Turkish attacks.
In response to the downing of a Syrian government Su-22 plane by a U.S. fighter jet near the town of Tabqah in Raqqa province on 18 June 2017, Russia announced that U.S.-led coalition warplanes flying west of the Euphrates would be tracked by Russian anti-aircraft forces in the sky and on the ground and treated as targets; furthermore, the Russian military said they suspended the hotline with their U.S. counterparts based in Al Udeid. In the wake of the announcement, Australia suspended its military flights in Syria, while media reports speculated that the U.S. might be edging towards a full-on confrontation with Russia and Iran in Syria. Nevertheless, on 27 June 2017, U.S. Secretary of Defense Jim Mattis reassured the press: ″We deconflict with the Russians; it's a very active deconfliction line. It's on several levels, from the chairman of the Joint Chiefs and the secretary of state with their counterparts in Moscow, General Gerasimov and Minister Lavrov. Then we've got a three-star deconfliction line that is out of the Joints Chiefs of Staff, out of the J5 there. Then we have battlefield deconfliction lines. One of them is three-star again, from our field commander in Baghdad, and one of them is from our CAOC, our Combined Air Operations Center, for real-time deconfliction.″
July 2017–December 2017
On 24 July, the Russian military announced that Russia had begun to deploy military police to Syria to monitor a cease-fire in two new safe (de-escalation) zones that had been envisaged in the plan on four safe zones, tentatively agreed upon by Russia, Iran, and Turkey in May, and mapped out in early July by Russia, the U.S, and Jordan: checkpoints and monitoring posts around safe zones in southwest Syria and in Eastern Ghouta were said to have been set up. Another such deployment was effected in early August — north of the city of Homs.
In August 2017, the Russian military announced that Al-Sukhnah town was captured from ISIS in early August with support of the Russian Aerospace Forces. Russian aviation said they had conducted 28,000 combat missions, and about 90,000 strikes as of late August 2017 during the operation in Syria.
On 5 September 2017, the Russian defence ministry said that the breaking of the three-year siege of Deir ez-Zor had been effected with active participation of Russian aviation and navy. President Putin congratulated both President Bashar Assad and the Russian commanders on “a very important strategic victory” (in his spokesman′s words). Humanitarian aid was delivered to pro-government inhabitants of the city by the Russian servicemen. The Russian aviation continued active support of the Syrian forces operating in Deir ez-Zor.
On 16 September, the U.S.-led coalition officials said Russian warplanes had bombed U.S.-backed militants in Deir ez-Zor, U.S. Special Operations Forces advising the SDF being "at most a couple of miles" away from the where the bomb struck; the claim was denied by the Russian defence ministry.
According to the Russian defence ministry, the Military Police platoon (29 servicemen) deployed as part of the de-escalation observation forces in the Idlib de-escalation zone was on 19 September encircled by rebels, icluding Jabhat al-Nusra, as a result of their offensive against the Syrian troops positioned north and northeast of Hama; the encirclement was breached by Russian forces, three servicemen of the Russian Special Operations Forces were wounded. The Russian ministry stated that according to their intelligence, the rebels′ ″offensive was initiated by the US special agencies in order to stop successful advance of the Syrian Arab Army to the east from Deir ez-Zor″. The Russian ministry′s statement on the U.S.′ role in the rebels′ offensive was the following day endorsed by president Vladimir Putin′s spokesman. On 21 September, the Russian MoD, in connection with what it called the U.S.-supported SDF having twice attacked positions of the Syrian Army in the Deir ez-Zor governorate with mortar and rocket fire, said: “Russia unequivocally told the commanders of U.S. forces in Al Udeid Air Base (Qatar) that it will not tolerate any shelling from the areas where the SDF are stationed. Fire from positions in regions [controlled by the SDF] will be suppressed by all means necessary.” In early October, the Russian MoD continued to accuse the U.S. forces of disguised support of the ISIL′s attacks on Syrian government forces, especially from the area at Al-Tanf, and stated: "If the United States views such operations as unforeseen 'coincidences,' then the Russian air force in Syria is prepared to begin the complete destruction of all such 'coincidences' in the zones under their control." The MoD statement of 6 October referred to ″unlawful establishment by the U.S. of [Al-Tanf] military base″ and called it ″a 100-kilometer black hole” on the Syria-Jordan border.
On 11 December, days after declaring Syria had been “completely liberated” from ISIL, Russian president Vladimir Putin visited the Russian base in Syria, where he announced that he had ordered the partial withdrawal of the forces deployed to Syria. Several hours later, Sergei Shoigu said the troops had already begun to return.
On 26 December, defence minister Sergey Shoigu said that Russia had set about ″forming a permanent grouping" at the Tartus naval facility and the Hmeymim airbase, after president Putin approved the structure and the personnel strength of the Tartus and Hmeymim bases. On the same day, the upper chamber of parliament approved the ratification of an agreement between Russia and Syria on expanding the Tartus naval facility, which envisages turning it into a full-fledged naval base.
Since January 2018
In January—February 2018, the Russian air force continued to provide combat support to the Syrian Army in its offensive operations in the Hama Governorate and the Idlib Governorate. The Russian forces stationed in Syria lost a Su-25SM in the Idlib province on 3 February 2018.
Following reports about multiple Russian private contractor casualties in the U.S. air and artillery strike on pro-government forces near the town of Khasham in the Deir ez-Zor Governorate that occurred on 7 February 2018, the contingent of regular Russian forces stationed in Syria appeared to have been reinforced.
Assessments of effectiveness
By late February 2016, the Russian airstrikes conducted around 60 airstrikes daily, while the American-led coalition averaged seven. These Russian airstrikes have reportedly proven particularly effective against ISIS oil trade and supply routes in the Syrian Desert. An estimated 209 Syrian oil facilities were destroyed by the airstrikes, along with 2,000 petroleum transport equipments. By the time of the withdrawal of the "main part" of its forces in mid-March, Russia had conducted over 9,000 airstrikes over the course of five and a half months, while helping the Syrian Army capture 400 towns and acquire 10,000 square kilometers of territory.
In January 2016, a few months after Russia's involvement in Syria, diplomat Ranjit Gupta wrote, in an article published by The Commonwealth Journal of International Affairs, that the Russian reinforcement was "godsend for Assad, greatly boosting the regime's sagging morale and that of its armed forces." Gupta continued:
With robust air cover provided by Russian airstrikes Assad's forces can start liberating and holding territory, particularly in the extremely strategically vital corridor connecting Damascus and Aleppo. Russian help provides Assad's military the distinct possibilities to regain the upper hand in the conflict, particularly in northwestern and western Syria at least.
In February 2016, Professor Fawaz A. Gerges of the London School of Economics opined the Russian military intervention had turned out to be a game-changer in the Syrian Civil War: ″Mr Putin's decision to intervene in Syria and shore up Mr Assad with new fighter jets, military advisers and advanced weapons stopped the bleeding of the Syrian army and allowed it to shift from defence to offence.″
Vincent R. Stewart, Director of the Defense Intelligence Agency, stated in February 2016 that the "Russian reinforcement has changed the calculus completely" and added that Assad "is in a much stronger negotiating position than he was just six months ago".
In the week following the start of combat missions, the website RealClear Defense, part of the RealClearPolitics group, published an assessment of the effectiveness of Admiral Kuznetsov as a platform for airstrikes, noting the small size of its air group (estimated at a total of eight Su-33 and four MiG-29K aircraft), the difficulties with the MiG-29K, which is seen as the more effective platform for strike missions, the smaller amounts of smart weapons for the Su-33 (which is primarily a fleet air defence aircraft), and the lack of catapults on the carrier, which limits the take-off weight of its aircraft.
Weapons and munitions employed
Russian forces in Syria were reported to have used a mix of precision-guided munitions and unguided weapons. The October 2015 airstrikes were Russia's first operational use of precision-guided munitions, whose development in Russia lagged behind other nations due to economic instability in the 1990s. The majority of weapons employed, however, were unguided. Most Russian jets employ the SVP-24 guidance system, which allows them to use unguided munitions with high precision, close to the precision of guided ones, with substantially smaller costs. Russia also used cruise missiles launched from corvettes and a frigate. Russian artillery has also been used in the form of howitzers and multiple rocket launchers. The air campaign was estimated to cost between $2.3 and $4 million a day in its early phase. Additionally, the 3M-14T cruise missiles that Russia has used extensively, cost roughly $1.2 million per unit.
Reports of war crimes and attacks on civilians
This section needs to be updated.(January 2018)
According to Amnesty International, in late February 2016 Russian warplanes deliberately targeted civilians and rescue workers during their bombing campaign. The human rights group has documented attacks on schools, hospitals and civilian homes. Amnesty International also said that "Russia is guilty of some the most egregious war crimes" it had seen "in decades". The director of Amnesty's crisis response program, Tirana Hassan, said that after bombing civilian targets, the Russian warplanes "loop around" for a second attack to target the humanitarian workers and civilians who are trying to help those have been injured in the first sortie.
In February 2016, Human Rights Watch (HRW) reported extensive use of cluster munitions by Syria and Russia, in violation of United Nations resolution 2139 of 22 February 2014, which demanded that all parties end "indiscriminate employment of weapons in populated areas". HRW said that "Russian or Syrian forces were responsible for the attacks" and that the munitions were "manufactured in the former Soviet Union or Russia" and that some were of a type that had "not been documented as used in Syria" prior to Russia's involvement in the war, which they claimed, suggested that "either Russian aircraft dropped them or Russian authorities recently provided the Syrian government with more cluster munitions, or both". HRW also noted that while neither Russia nor Syria are parties to the Cluster Munitions Convention, the use of such munitions contradicts statements issued by the Syrian government that they would refrain from using them.
In February 2016, Médecins Sans Frontières has said that either "Syrian regime" or Russian warplanes deliberately attacked a hospital in Maarat al-Numan. The Syrian Observatory for Human Rights stated that it was Russian warplanes that destroyed the hospital.
The Syrian Observatory for Human Rights has also reported that by the middle of February 2016, Russian air strikes had killed 1,000 civilians, including 200 children, since the initiation of the intervention in September 2015 . In March 2016, Amnesty International reported "compelling evidence" of at least six such attacks.
These reports, including the bombing of two hospitals by Russian Air Force planes, have been denied by Russian officials. In May 2016 the Russian delegation to the UN Security Council vetoed a statement condemning the air strikes on a refugee camp in Idlib on 5 May.
In June 2016 Russia Today, while reporting minister Shoigu's visit to Hmeymim air base, showed incendiary cluster bombs being loaded onto Russian airplanes, identified as RBK-500 ZAB-2.5SM thanks to clearly visible markings. After this information, inconsistent with official Russian statements. The video was removed but later reinstated and uploaded by RT. An editorial note below the video made no mention of the weapon, saying a frame in the video has caused "concern for personnel safety" because of a pilot’s close-up. "Upon re-evaluation it was deemed that the frame did not pose any risks; it had since been restored and the video is up in its original cut," the RT statement said.
Russian and Syrian airplanes targeted the M10 hospital, one of the largest hospitals in Aleppo, which killed about 30 people. According to eyewitnesses, the hospital was bombarded twice in two days by at least two barrel bombs and one rocket.
Cooperation with Iran
Iran continues to officially deny the presence of its combat troops in Syria, maintaining that it provides military advice to President Assad's forces in their fight against terrorist groups. It is believed that the Syrian Arab Army receives substantial support from the Quds Force; in June 2015, some reports suggested that the Iranian military were effectively in charge of the Syrian government troops on the battlefield.
After the loss of Idlib province to a rebel offensive in the first half of 2015, the situation was judged to have become critical for Assad's survival. High level talks were held between Moscow and Tehran in the first half of 2015 and a political agreement was achieved; on 24 July, ten days after the signing of the nuclear agreement between Iran and the P5+1 countries, General Qasem Soleimani visited Moscow to devise the details of the plan for coordinated military action in Syria.
In mid-September 2015, the first reports of new detachments from the Iranian Revolutionary Guards arriving in Tartus and Latakia in western Syria were made. With much of the Syrian Arab Army and National Defence Force units deployed to more volatile fronts, Russian Marines and the Iranian Revolutionary Guard Corps (IRGC) have relieved their positions by installing military checkpoints inside the cities of Slunfeh (east Latakia Governorate), Masyaf (East Tartus Governorate) and Ras al-Bassit (Latakia coastal city). There were also further reports of new Iranian contingents being deployed to Syria in early October 2015. After the start of the Russian operation, it was generally thought that Iran will be playing a leading role in the ground operations of Syria's army and allies, whilst Russia will be leading in the air in conjunction with the Syrian Arab Air Force, thereby establishing a complementary role.
The use of Iran′s Hamadan Airbase by Russian military aircraft that began in mid-August 2016 marked a new level of cooperation between the countries in their support for the Syrian government
- For further Russian comments on Syria and Russian initiatives since 30 September 2015 not part of this military operation, see: Russian involvement in the Syrian Civil War
- On 1 October 2015, the Syrian Ambassador to Russia, Riyad Haddad, stated that the Russian air force is acting in full coordination with the Syrian army. He added that Syria's position is that the Russian intervention is the only legitimate intervention under international law and called for other countries to join the "non-criminal" Russian intervention in Syria.
United Nations – On 31 October 2015, UN Secretary General Ban Ki-moon said in an interview with Spanish daily El Mundo "The future of Assad must be decided by the Syrian people," and "The Syrian government insists that President Assad takes part (in any transitional government) but others, especially Western countries, say there is no place for him, but because of that we have lost three years, there have been more than 250,000 dead, more than 13 million displaced within Syria... more than 50 percent of hospitals, schools and infrastructure have been destroyed. There's no time to lose." 
In 2016, retired war crimes prosecutor Carla Del Ponte, who was researching rights abuses in Syria as part of the Independent International Commission of Inquiry on the Syrian Arab Republic, told an interviewer "I think the Russian intervention is a good thing, because finally someone is attacking these terrorist groups", but added that Russia is not distinguishing enough between terrorist and other groups. In 2017, she complained that Russia was using its UN Security Council veto to prevent prosecution of war crimes in Syria, leading her to resign from her role in Syria.
NATO – NATO has condemned Russian air strikes and urged Russia to stop supporting Syrian President Bashar al-Assad. On 8 October 2015, they renewed assurances to defend the allies in view of the "escalation of Russian military activities."
U.S.-led coalition – On 1 October 2015, participants in the United States-led anti-ISIL coalition called on Russia to curtail its air campaign in Syria, saying the airstrikes had hit Syrian opposition groups and civilians. Such strikes would "only fuel more extremism", the statement issued by the United States, UK, Turkey and other coalition members declared. "We call on the Russian Federation to immediately cease its attacks on the Syrian opposition and civilians and to focus its efforts on fighting ISIL." United States President Barack Obama, at a news conference on 2 October, underscored the coalition statement by saying the Russian action was driving moderate opposition groups underground, and would result in "only strengthening" ISIL.
In 2017, the Inter-parliamentary Assembly of the Community for Democracy and Rights of Nations, an international organization consisting of the only partially recognized republics Abkhazia, South Ossetia and Transnistria, adopted a joint statement in which supported the policy of the Russian Federation in Syria.
Armenia provides support for the Russian operations in Syria by providing operational and logistical support. As a member of the CSTO, Armenia supports the Russian military intervention.
Belarus, also a member of the CSTO, supports the Russian military intervention in Syria, said the country's acting foreign minister Vladimir Makei in October 2015.
China has reacted positively to Russia's military intervention in Syria. The Chinese government perceives it as an element of the global fight against terrorism. China has no interest in getting involved militarily in Syria, but China's special envoy for the crisis in Syria praised Russia's military role in the war. In August 2016, Guan Youfei, director of the Office for International Military Cooperation of China's Central Military Commission, was in Damascus and said that "China and Syria's militaries have a traditionally friendly relationship, and China's military is willing to keep strengthening exchanges and cooperation with Syria's military".
Egypt voiced support of the Russian air operation. On 3 October 2015, Foreign Minister Sameh Shoukry said the Russian entry into war in Syria was bound "to have an effect on limiting terrorism in Syria and eradicating it."
Iraq supports the Russian intervention in Syria and has permitted Russia to fly over Iraq with its war planes.
Israel – Shortly prior to the Russian intervention, the Israel Defense Forces and Russian military had set up a joint working group to coordinate their Syria-related activities in the aerial, naval, and electromagnetic arenas. The Israeli government was primarily concerned about ensuring that the potential alliance between Hezbollah and Russia is not detrimental to its security. According to Zvi Magen, former ambassador to Moscow, "Israel made clear to him [Putin] that we have no real problem with Assad, just with Iran and Hezbollah, and that message was understood." An Israeli military official stated that Israel would not shoot down any Russian aircraft which overflew Israeli territory because "Russia is not an enemy".
Jordan – On 23 October 2015, Jordan agreed to set up a "special working mechanism" in Amman to coordinate military actions with Russia in Syria. Russian foreign minister, Sergey Lavrov called for continued expansion of the alliance, saying "We think that other states that participate in the anti- terrorist fight can join this mechanism as well."
Saudi Arabia – On 1 October 2015, Saudi Arabia′s senior diplomat at the UN demanded that Russia cease its intervention, repeating claims made by Western diplomats that Russia was targeting the unnamed "moderate" anti-government opposition rather than ISIL.
Turkey – President Recep Tayyip Erdoğan, after a series of alleged violations of the country′s airspace by Russian military aircraft in early October 2015, warned that Russia's military operation in Syria could jeopardise the bilateral ties between the countries. On 23 December, co-leader of Turkey's pro-Kurdish Peoples' Democratic Party Selahattin Demirtaş criticized Ankara's stance regarding a Russian jet shot down by Turkey in November 2015.
United Arab Emirates – Initially, the UAE did not comment on the Russian intervention. Foreign Minister Anwar Mohammed Qarqash later expressed support for the intervention, claiming they were against a "common enemy".
United Kingdom – Prime Minister David Cameron said "It's absolutely clear that Russia is not discriminating between ISIL and the legitimate Syrian opposition groups and, as a result, they are actually backing the butcher Assad and helping him". British troops will be sent to the Baltic states and Poland following Russia's intervention in Syria "to respond to any further provocation and aggression".
United States – In early October 2015, President Barack Obama was reported to have authorised the resupply—against ISIL—of 25,000 Syrian Kurds and 5,000 of the armed-Syrian opposition, emphasising that the United States would continue this support now that Russia had joined the conflict.
- The U.S. ruled out military cooperation with Russia in Syria. Secretary of Defense Ashton Carter and other senior U.S. officials said Russia's campaign was primarily aimed at propping up Assad, whom Obama has repeatedly called upon to leave power. On 8 October 2015, he said, at a meeting of NATO defence ministers in Brussels, that he believed Russia would soon start paying the price for its military intervention in Syria in the form of reprisal attacks and casualties. He added that he expected "in the next few days the Russians will begin to lose in Syria." He further said Russia's campaign was primarily aimed at propping up Assad.
- On 9 October, the Obama administration abandoned its efforts to build up a new rebel force inside Syria to combat the Islamic State, acknowledging the failure of its $500 million campaign to train thousands of fighters and announcing that it will instead use the money to provide ammunition and some weapons for groups already engaged in the battle.
- On 24 November, Obama said that Turkey "has a right to defend its territory and its airspace" after it shot down a Russian bomber for allegedly violating Turkish airspace for 17 seconds, near the Syrian border. Obama also said "[Russians] are going after moderate opposition that are supported by not only Turkey but a wide range of countries." Syrian government forces supported by the Russian air force were fighting against an alliance that included the Turkish-backed Syrian Turkmen Brigades and al-Qaeda's Syrian affiliate the al-Nusra Front.
Militias and religious agents
Representatives of the Kurdish YPG and PYD expressed their support for Russian air strikes against Islamic State, al-Nusra Front and Ahrar al-Sham. They also asked for Russian help in weaponry and for the cooperation with Russia in the fight against Islamic State. Shortly after the Russian air strikes started, Salih Muslim, co-chair of the PYD, has said in an interview that he doesn't believe "that America will object because [Jabhat] al-Nusra and Ahrar al-Sham are no different than Daesh. They are all terrorist organizations and share the same radical mentality."
On 30 September, Russian Orthodox Church spokesman Vsevolod Chaplin, said the fight against terrorism was a "moral fight, a holy fight if you will". Leader of the Central Spiritual Administration of Muslims of Russia, Chief Mufti Talgat Tadzhuddin stated: "We fully back the use of a contingent of Russian armed forces in the battle against international terrorism." According to The Washington Post, "Russian Muslims are split regarding the intervention in Syria, but more are pro- than anti-war."
Over 40 anti-government groups, including factions such as Ahrar al-Sham, Jaysh al-Islam and the Levant Front, were reported, on 5 October, to have vowed to attack Russian forces in retaliation for Moscow's air campaign.
Al-Qaeda's Syrian affiliate al-Nusra Front has set a reward for the seizure of Russian soldiers of 2,500,000 Syrian pounds (approximately US$13,000). Abu Ubaid Al-Madani, who speaks Russian, released a video addressed to the Russians warning that they would massacre Russian soldiers. Abu Mohammad al-Julani called for Russian civilians to be attacked by former Soviet Muslims and called for attacks on Alawite villages in Syria.
The Syria-based, Al-Qaeda linked Saudi cleric Abdallah Muhammad Al-Muhaysini threatened that Syria would be a "tomb for its invaders" or "graveyard for invaders" in response to the Russian intervention and brought up the Soviet–Afghan War. Muhaysini had foreign fighters of multiple backgrounds repeated the phrase "The Levant is the graveyard of the Russians", in a video message.
The Islamic State of Iraq and the Levant declared Jihad upon the Russians in a recorded vocal communiqué by Abu Mohammed al-Adnani. On 12 November, ISIL published via its media branch, al-Hayat Media Center a music video in which they threatened that they would attack Russia very soon and "blood would spill like an ocean".
The Muslim Brotherhood of Syria issued a statement declaring Jihad against Russia obligatory (Fard 'ayn) upon all who are able to carry weapons. They cited the Russian Orthodox Church's call of the operation as a Holy War.
Fifty-five Saudi religious scholars signed a statement against the Russian intervention, first addressing the Russians as "Oh Russians, oh extremist people of the Cross", reminding them of the Soviet invasion of Afghanistan and addressing Orthodox Russia as the heir of the Soviet Communists, accusing them of "supporting the Nusayri regime" and invading "Muslim Syria", accusing the leaders of the Russian Orthodox Church of declaring a "Crusade" and telling them they will meet the fate of the Soviet Union and suffer "a shameful defeat in the Levant". The statement also addressed "Our people in the Levant", telling the able-bodied and those who are able to contribute to join the "Jihad" instead of emigrating. The statement also called for all factions against the government in Syria to unite. Further, addressing "Arab and Muslim countries", telling them that there is a "real war against Sunnis and their countries and identity" at the hands of the "Western-Russian and Safavid and Nusayri alliance", calling for the termination of all relations with Iran and Russia with Muslim countries and to "protect the land and people of the Levant from the influence of the Persians and Russians", especially calling upon Qatar, Turkey, and Saudi Arabia to support the Levant.
Photos of Uyghur fighters of the Turkistan Islamic Party were released with captions in Arabic that said "standing up strongly to the Nusayri army and the Russians." (المجاهدين التركستانيين يتصدى بقوة للجيش النصيري ومن قبل الروس).
A Turkmen opposition group allied with the Free Syrian Army and al-Nusra Front claimed that Russian air forces conducted simultaneous air strikes against Turkmen villages and positions in the Turkmen Mountain area. More than 40 civilian casualties were reported in one incident.
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