The justification for war was WMDs. We knew he had them. The same bunch of senators who were the loudest critics of Bush were the same bunch (John Kerry included) that urged Clinton to go after Saddam in 1998. For the same WMD. That he didn't have a few years later. Hmmmm.
Oh, and in case you've missed it (strangely, much of it has gone unreported) we have found a fair amount of material buried in various locations. Frighteningly, however, much of it probably scurried across the border into Syria while France, Germany and Russia were preventing us from taking action. Sweetheart oil deals and illegal sales of weapons will cause some countries to take some pretty drastic actions...like the Russians (allegedly) helping said scurrying to occur.
"Purgatory's kind of like the in-betweeny one. You weren't really shit, but you weren't all that great either. Like Tottenham."
I'll try being nicer...if you'll try being smarter.