The decision to invade Iraq was the single biggest foreign policy blunder in the history of the United States.
The really sad thing is that Bush Sr. understood why we didn't want to go into Iraq.
Iraq /was/ the cork in the bottle that contained Iran and all of their big talk about WMD was mainly directed at Iran.
Bush Jr. screwed that all up,
Then we took the only guy who knew how to hold the country together and maintain that corking position and hung him.
A true Neocon, make the world safe for democracy disaster.