Removing Saddam after he refused FOR TWELVE YEARS to disclose what he had done with his WMDs and to stop him from massacring tens of thousands of Kurds and Shia DID justify what Bush did. The 4,000 American heroes who lost their lives had volunteered to do this. Except for a few, most of them were killed in the post liberation violence which was unleashed by radical Shia and Sunnis, aided and abetted by Al Qaeda and Iran. This was not Bush's fault. We were asked by the new Iraqi government to stay and help them against the attacks.
If the Iraqis had come together after Saddam's refusal to rebuild their country like the Germans, Italians and Japanese did after WW-II, Iraq would have been a prosperous "shining city on a sand dune" by now.