ISIS

U.S.-backed Iraqi forces drove the militants out of the city eight months ago, but residents say hardly any efforts are in place to rebuild homes after airstrikes and explosions toppled them.

Raqqa may be cleared of ISIS fighters, but hidden throughout the city are thousands of hidden bombs. U.S. special forces and Syrians are training young men to disarm them.

Up to 2,000 U.S. troops are in Syria defending Kurdish allies. The threats come from regime forces, Iran, Turkey and even Russia.

His phone rarely stops ringing. Most calls and messages are from other Yazidis in Iraq's Kurdistan region, asking for help to find their relatives. Others are from people threatening to kill him.