Russia may be an adversary, but it is not our number one enemy. Neither is China, which may have over a billion people but we’re its best customer and they’ve invested too much in this nation to risk our destruction. Iranian leaders, on the other hand, have made no secret that they hate America and everything we stand for. The leading mullahs are true believers in a caliphate that will conquer the world. The 21st century has seen a broad mainstream embrace of a collective Muslim identity by young Muslims and the appeal of a caliphate as an idealized future...