Russia delivers strikes upon terrorist groups located in Syria, including radical organizations "Islamic State" and "Jabhat an-Nusra" (both banned in Russia) since September 30, 2015, having deployed a special-purpose air brigade (currently amounting to 44 airplanes and 16 helicopters) on the Hmeimim airbase. Earlier on, Syrian president Bashar Assad asked Moscow for military assistance. In total, as of January 11, 2016, Russian air force has performed 5,551 mission sorties against terrorist’s facilities.
Russian president Vladimir Putin repeatedly stated that Russia’s campaign in Syria had a well-defined timeframe. "These operations won’t last forever. I’ve always said they would be of a temporal nature. It depends on the offensive operation of Syrian national army against terrorist organizations", said the Russian leader late in November. However, he has never set the deadlines.