Air strikes on Syria's Raqqa kill 18: Reports
Air strikes struck Raqqa, the de-facto capital of the Islamic State in Syria, killing at least 13 civilians and five militants, said the Syrian Observatory for​ Human Rights on Tuesday. "Raqqa has not been targeted by air raids of this intensity for several weeks... These raids continued throughout the night and into the morning," said Observatory chief Rami Abdel Rahman.