After 911 the Administration felt that a drastic change in policy was needed to protect this country. Removing Saddam was part of that approach - motivated by his well-known antipathy to this country, his willingness to use WMD, and his supposed possession of them (according to many in the intelligence services).
Well, the last turned out to be wrong...and many who opposed the new strategy have tried to use it to discredit the Administration.
There are no villians here. Only people with vastly different outlooks and approachs trying to get their way in a political climate which is dirty, mean-spirited, and hatefull - as usual.
I'm sorry, but what the left is doing -- undercutting morale and abetting the enemy in a time of war -- IS villainous. If not worse...