In just a few short weeks, a newly-united rebel coalition has captured almost all of northwest Syria's Idlib province from government forces, overturning assumptions over the war's course, and threatening the regime's ability to defend its heartland.
VICE News filmmaker Salam Rizk secured rare access to the jihadist fighters at the spear tip of the battle for the strategic city of Jisr al-Shughour.
Watch "Talking Heads: Who's Supporting Assad" - http://bit.ly/1SA2DE7
Read "Syria After Four Years: Timeline of a Conflict" - http://bit.ly/1HHX7vQ
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