Frontline: The Secret History of ISIS

PBS's award-winning investigative series Frontline presents a provocative look at the factors and events that helped germinate the jihadist group responsible for worldwide unrest, including American foreign policy and the U.S. invasion of Iraq. Interviews with former Secretary of State Colin Powell, former Secretary of Defense Chuck Hagel and former U.S Ambassador to Syria Robert Ford illuminate how this cascade of events created our current situation.