聚焦2008年美国大选：谁将入主白宫

　　How much of a millstone is Iraq to John McCain, as he strives to become America's next president Although the Republican candidate strenuously tries to avoid the charge that his presidency will amount to nothing more than a third term for George Bush, his support for the war is the single clearest policy difference between him and Barack Obama. Mr Obama's supporters are never likely to cease trumpeting that, back in 2002, from his perch in the Illinois Senate, he denounced the prospect as a “dumb” adventure which would lead to “a US occupation of undetermined length, at undetermined cost, with undetermined consequences.”

　　That proved remarkably prescient. And the polls suggest most Americans agree with Mr Obama. A recent poll for CBS shows 62% of Americans believing that the war is going badly, and 61% thinking that Iraq will “never” become a stable democracy.