In this new 90-minute National Geographic documentary, Academy-Award nominated filmmaker Sebastian Junger and Emmy winner Nick Quested chronicle Syria’s descent into the unbridled chaos that allowed the rise of the Islamic State.

Pulling from nearly 1,000 hours of visceral footage, they capture the Syrian war’sharrowing carnage, political and social consequences, and human toll,while painting an alarming picture of the West’s role in the creation of ISIS.