On 30 September 2015, Russia launched a military intervention in Syria after a request by the government of Bashar al-Assad for military support in its fight against the Syrian opposition and Islamic State (IS) in the Syrian civil war. The intervention was kick-started by extensive air strikes across Syria, focused on attacking opposition strongholds of the Free Syrian Army along with the rebel coalition of the Revolutionary Command Council and Sunni militant groups under the Army of Conquest coalition. In line with Syrian government propaganda which denounces all armed resistance to its rule as "terrorism"; Syrian military chief Ali Abdullah Ayoub depicted Russian airstrikes as facilitating their campaign against terrorism. Russian special operations forces, military advisors and private military contractors like the Wagner Group were also sent to Syria to support the Assad regime, which was on the verge of collapse. Prior to the intervention, Russian involvement had been heavily invested in providing Assad with diplomatic cover and propping up the Syrian Armed Forces with billions of dollars of arms and equipment. In December 2017, the Russian government announced that its troops would be deployed to Syria permanently.