The US didn’t interfere with the rise of anti-government jihadist groups in Syria that finally degenerated into Islamic State, claims the former head of America’s Defense Intelligence Agency, backing a secret 2012 memo predicting their rise.

An interview with retired Lieutenant General Michael Flynn, former head of the Defense Intelligence Agency (DIA), given to Al Jazeera’s Mehdi Hasan, confirms earlier suspicions that Washington was monitoring jihadist groups emerging as opposition in Syria.