George W. Bush knows that Islam is a religion of peace because Sheikh Muhammad Sayyid Tantawi said so. Two months after the September 11 terrorist attacks, the President told the United Nations that Tantawi, "the Sheikh of Al-Azhar University, the world's oldest Islamic institution of higher learning, declared that terrorism is a disease, and that Islam prohibits killing innocent civilians." Yet unfortunately for Bush and others who trumpeted Tantawi's words around the globe last winter, this sheikh whom the BBC called "the highest spiritual authority for nearly a billion Sunni Muslims" has now changed his tune. As liberals say...