Actually I agree with his answer, and I disagree with him on a lot. But I agree with it *in addition to* hunting down and eliminating Al Qaida. And I wouldn’t have tried to “nation build” in Afghanistan, which is and was a fool’s errand. The expensive part of Afghanistan, both in lives and treasure, has been the nation building aspect, not the punitive expedition.
I don’t think anyone here would argue with the energy independence aspect, but we would have been hit again and again if our only response was something that would take a decade or more to accomplish, allowing them to grow and get even bolder.
Carson’s solution to ISIS is to fight them by economic measures.