Great piece by Anne Applebaum in Slate.
Even if Iraq has turned out better than some expected, and even if it becomes a beacon of democracy in the Arab world, a very high price has been paid. Above all (she says), there has been little thought to the strategic harm that has been done to U.S. interests partly by the intense focus on this one country. It is hard to name an unstable country or hot spot that is not more of a threat to the U.S. today than when Bush invaded Iraq. At the top of the list, one might put Iran.