I don't know what the political ramifications are of admitting one's own faults, but I've gotta admit that it makes me feel a little safer. Here's a quote from Mr Ignatius at the WaPo.
"My own mistake was thinking more about the justice of overthrowing Saddam Hussein's tyrannical regime than about the difficulty of building a new postwar Iraq. I still think the war was a just cause, but I worry that its costs may one day outweigh its benefits. I don't regret my support for toppling Hussein, but I wish I had followed those red flags and examined more carefully how America could win the peace, after it won the war."