“Observers describe Bush as ‘messianic’ in his conviction that he is fulfilling the divine purpose. But, as Lincoln observed in his second inaugural address, ‘The Almighty has His own purposes.’ Invoking also Lincoln’s remarks on the Mexican War, historian Arthur Schlesinger, Jr. laments the rise of preemption, senses dark forebodings in Dubya’s saber-rattling with Iran, and concludes that “there is no more dangerous thing for a democracy than a foreign policy based on presidential preventive war.”