Looking for a Silver Bullet Against the Islamic State

As the Islamic State claims responsibility for more and more attacks throughout the world, the fight against the militant group is as pressing a concern as ever. At the Republican National Convention in Cleveland, which ends Thursday, speakers have raised the subject again and again, some questioning the U.S.-led anti-Islamic State coalition's slow and steady strategy to defeat the group. But the coalition's tactics have started to work. During the coalition's fourth meeting, held Wednesday and Thursday at Joint Base Andrews, U.S. Defense Secretary Ash Carter spoke of the strides they had made against the Islamic State and the momentum they would have going forward. Despite the coalition's progress, however, the fight against the Islamic State has revealed that there is no silver bullet to defeat it or any other extremist group....