A short podcast (16 mins) of a SME William McCants @ Chicago speaking on 'The Power of an Idea' as part of an event on Terrorism: Behind the Headlines.

Link:https://www.chicagoideas.com/videos/876

His very slim bio:
William McCants directs the Project on U.S. Relations with the Islamic World at The Brookings Institution. McCants is the author of 'The ISIS Apocalypse: The History, Strategy and Doomsday Vision of the Islamic State'.