The end of ISIS as an occupying army is official with the fall of Raqqa, Syria two weeks ago. ISIS’s defeat was never in question: holy warriors led by God were never a match for the Goliath of modernity. But ISIS lives on in the minds and hearts of its true believers, some of whom would be oh so happy to take jihad to the Great Satan using modern weapons they could never themselves create. This time in New York it was a truck. Next time it could be much, much worse. How should modernity fight back now?