Al-Qaida militants battled fighters linked to the Western-backed opposition along with Kurdish gunmen in Syrian towns along the Turkish border on Friday, in clashes that killed at least 19 people, activists said. The violence is part of an outburst of infighting among the myriad rebel groups...

The CIA is expanding a clandestine effort to train opposition fighters in Syria amid concern that moderate, U.S.-backed militias are rapidly losing ground in the country’s civil war, U.S. officials said. But the CIA program is so minuscule that it is expected to produce only a few hundred...

A group of powerful rebel brigades in northern Syria is struggling to defuse an armed standoff pitting insurgents against an affiliate of Al Qaeda for control of a strategic town near the Turkish border.   The conflict over the town, Azaz, has shuttered a Turkish...

 International inspectors racing to meet a mid-2014 deadline to eliminate Syria's chemical stockpile said Thursday they have made "encouraging initial progress" in their mission, and hope to start onsite inspections and begin disabling equipment within the next week. An advance team of...