U.S. Secretary of State John Kerry met with Russian President Vladimir Putin about boosting military and intelligence cooperation against Islamic State and al Qaeda in Syria and told him that without "concrete, near-term steps," diplomatic efforts to end the war could not go on indefinitely....

U.S. Secretary of State John Kerry took a proposal to boost military and intelligence cooperation against Islamic State and al Qaeda in Syria to Moscow on Thursday, despite doubts among U.S. defense and intelligence officials. Kerry was due to meet President Vladimir Putin on Thursday evening...

Air strikes killed at least 12 civilians including children in two rebel-held neighborhoods of Syria’s Aleppo city on Thursday, a monitoring group said. Nine people were killed in the Tariq al-Bab neighborhood, and another three in the district of Salhin in the east of the city, the Syrian...

 At least 12 people were killed in air strikes on the rebel-held western Syrian town of Rastan on Wednesday, a local doctor and a monitoring group said, despite a government-declared nationwide temporary truce. The British-based monitoring group, the Syrian Observatory for Human Rights,...