Sam Heller and Avi Asher-Schapiro
After nearly two weeks of brutal shelling and urban combat, Russia and the United States have declared a tentative ceasefire in Syria's second-largest city.
Just two weeks ago a jihadist militia with allegedly close ties to ISIS broke out of its isolated home base in the remote foothills of the Golan Heights, seizing two major towns —Syrian rebels are now scrambling to react.
In 2011, there was one Syria, ruled by a ruthless dictator. In 2016 there are several warring quasi-states, from which millions of people are fleeing.