Russia has committed not to launch strikes against Syrian groups the United States considers to be part of the moderate opposition, the U.S. State Department said on Friday, hours before a cessation of hostilities in Syria was due to start. It is "put-up or shut-up time" for...

Syria's branch of al Qaeda, one of its most powerful Islamist rebel groups, called for an escalation in fighting against the government and its allies, adding to the dangers facing an agreement to halt fighting set to start on Saturday. The government and rebel groups have agreed...

The United States is becoming more careful in its ties with Syrian Kurdish YPG fighters and Ankara has seen some changes in attitude from Washington about the relationship, Turkey's presidential spokesman said on Friday. "I see some change in the U.S. position. I think they are being...