Watch The Battle for Syria on PBS. See more from FRONTLINE.

Frontline journeys to the heart of the Syrian insurgency, embedding with rebels who are waging a full-scale assault on Assad’s forces. But how organized are Syria’s opposition groups? What dangers might the conflict unleash? And what would it take to end it?

Frontline turned to 10 experts — Syrian activists, journalists who have reported from the country’s dangerous front lines and analysts who specialize in the region — to explain the long-term impacts of Syria’s deadly conflict.