Isolate and quarantine them. They have a contagious disease that will destroy mankind. Surround them with a moat full of alligators. Airlift food, ammo, stones and knives. Then let them kill themselves off until the last man is standing.
Their arrogance is in their numbers.
They believe all they have to do is get everyone who calls themselves a Muslim to get on board and they become dispensable fodder in the process of overwhelming the world and imposing their cult of death and backwardness.