The Bassel al-Assad Airbase in Syria’s northwestern Lattakia province -- believed to host 32 planes, 16 helicopters, nine tanks, two land-to-air missile defense systems and a 2,000-strong staff of Russian officers -- represents Russia’s most significant military asset in Syria. Russia is...

More than 100 people killed on Friday in double air strikes on northern city of Aleppo by Syrian regime and key ally Russia, activists said amid claims by state-run media that the deadly aerial attacks have targeted ISIS strongholds. Russian warplanes have mounted a new wave of air strikes...

 ISIS attacked Syrian government-held areas in the eastern city of Deir al-Zor and an air base south of the city on Friday, Reuters said. Regime warplanes bombarded another area of the city and around the air base, the Syrian Observatory for Human Rights said, a day after pro-Damascus...

Hundreds of Iranian troops have arrived in Syria to join a major ground offensive in support of  Bashar al-Assad's government, Lebanese sources said on Thursday, a further sign of the rapid internationalization of a civil war in which every major country in the region has a...