Thinking of modern jihad as simply a cultural extension of Islam is a common, and unfortunate, mistake. Two new books by Gilles Kepel and Olivier Roy offer better historical and sociological explanations, but they are only a start. The War for Muslim Minds: Islam and the West. By Gilles Kepel. Cambridge: Belknap, 2004, 336 pp. $23.95. Globalized Islam: […].