EVER SINCE 9/11, a dark view of Islam has been gaining currency on what might be called the Western street. This view holds that, contrary to the protestations of our political leaders — who claim that acts of terrorism are being carried out by a minority of extremists — the real problem lies with Islam itself. In this interpretation, Islam is not a religion of peace but of war, and its 1.2 billion adherents will never rest until all of humanity is either converted, subjugated or simply annihilated. Is the war on terrorism really a "clash of civilizations"? The overreaction...