If there was a defining moment in 2006, it was the public firing of Donald Rumsfeld, just hours after the Republican rout of Nov. 7. George Bush was bowing to public repudiation of his war policy, his war minister and, indeed, his war presidency. Yet one senses voters were doing more than rejecting Bush's leadership on Iraq. They were rejecting the very idea of spilling blood and treasure in crusades for "global democracy," "ending tyranny on earth" or a "New World Order." By saying, as most of us are saying now, "In the end, it's the Iraqis' problem," Americans seem...