Among U.S. allies in the war against terrorism, Pakistan cannot be easily characterized as either friend or foe. Nuclear-armed Pakistan is an important center of radical Islamic ideas and groups. Since 9/11, the selective cooperation of president General Pervez Musharraf in sharing intelligence with the United States and apprehending al Qaeda members has led to the assumption that Pakistan might be ready to give up its longstanding ties with radical Islam. But Pakistan's status as an Islamic ideological state is closely linked with the Pakistani elite's worldview and the praetorian...