George Weigel, author of Faith, Reason, and the War Against Jihadism: A Call to Action, gets right to the point with John J. Miller: “What I’m trying to explore in this small book . . . is the frankly religious roots of jihadist ideology. It is certainly true that not all Muslims are jihadists. It is equally true that jihadism draws on what it understands to be Islamic religious authorizations for conducting a war against the West, a war that includes the use of mass violence against enemies. To deny that this is religiously grounded . . . is to deny reality.”