ISIS fighters reportedly seize positions just 30 miles from Aleppo , Syria 's largest city . Rebels attempt to keep Assad surrounded by ISIS on one side , and regime forces on the other . Charles Lister describes beleaguered Syrian Army in Aleppo faces being wiped out .
ISIS fighters reportedly seize villages just 30 miles from Aleppo , Syria 's largest city . Rebels fighting to topple Assad surrounded by ISIS on one side , and regime forces on the other . Charles Lister says beleaguered Syrian opposition in Aleppo faces being wiped out .