That is why no strategy will work, because Islam is the problem. If ISIS is destroyed, another group with a new name will spring up to take its place. The only solution is to ban Islam in western nations, tear down all mosques, and deport Muslims back to their own crappy countries. Let them kill each other there, and keep the US out of it. Bring our troops home and put them on our own borders. Institute a “pet the pig” requirement to board a plane or enter a western nation. Problem largely solved.