The Syrian state and allied militia have detained and abducted tens of thousands of people since 2011 in a campaign of enforced disappearances that is a crime against humanity, Amnesty International said in a report on Thursday. The rights watchdog interviewed relatives of the...

The U.S. military said on Wednesday it was moving toward providing additional weaponry to Syrian opposition forces battling Islamic State after territorial gains in the past week by the U.S.-backed fighters. Colonel Steve Warren, a Baghdad-based spokesman for the U.S.-led coalition...

Warplanes believed to be Russian carried out several air strikes on Wednesday on areas of northwestern Syria that were included in a local ceasefire agreed by warring sides in September, the Syrian Observatory for Human Rights said. The strikes hit the outskirts of the towns of Maarat...

Moscow's military force in Syria has grown to about 4,000 personnel, but this and more than a month of Russian air strikes have not led to pro-government forces making significant territorial gains, U.S. security officials and independent experts said. Moscow, which has maintained a...