for more on the death of al baghdadi and what it means for the future of terrorism, i'm joined by general david petraeus. he was the commander of sent-com and leader of the cia. david, good to have you on. >> good to be here, fareed. thanks. >> tell me what you think this means for the future of isis. i ask because you destroyed al qaeda in iraq, and of course it came back in the form of isis when american troops left. when you look at the situation today with isis, decapitated, it's lost its territory, sources of revenue, a fighter scattered in the fields. how likely or unlikely is it that something like isis could reconstitute itself? >> there are still some 20 or so thousand islamic states fighters in that broad area, keeping in mind the caliphate was the size of indiana.