Syrian regime forces and allied militia backed by Russian airstrikes launched an offensive against rebels in the Ghab Plain in western Syria Thursday, the Britain-based Syrian Observatory for Human Rights and a rebel fighting there said. Rebel groups led by the dominant Ahrar al-ShamIslamic...

Syrian troops and militia backed by Russian warplanes mounted what appeared to be their first major coordinated assault on Syrian insurgents on Wednesday and Moscow said its warships fired a barrage of missiles at them from the Caspian Sea, a sign of its new military reach. The...

Syrian rebel groups led by dominant Ahrar al-Sham movement on Wednesday have thwarted regime's major ground attack on the northern countryside of Hama province, destroying at least 25 army vehicles and tanks, activists and rebel commanders said. The Iranian-backed Hezbollah militia took part in...

U.S.-led coalition aircraft bombing Islamist militants in Syria were re-routed at least once in the last six days to avoid a close encounter with Russian planes, a Pentagon spokesman said on Wednesday. The United States and its allies have been waging a year-long air campaign...