Iraq was a nation led by dictator openly hostile to the US which had developed AND USED chemical weapons, very surely had some bio's in stock (they are easier to make than chem's) and was dang well on the road to develop nuclear weapons. So:
How would you get rid of the threat of WMD's falling into the hands of those like bin laden (another whacko extremist openly hostile to the US and non-quran-thumping people)?
A: You find the source/likely source of WMD's that has a high probability of providing said WMD's to the likes of bin laden and you ELIMINATE said threat.
And the only way to eliminate the threat is not by demanding the destruction of the current stockpile of WMD's that they KNOW exist (as proven by their use on humans a few decades earlier) and relying on some love muffin international organization (UN) to make it happen. No, the threat is only eliminated by taking over their facilities and neutralizing their scientists. You can bet your wiener that dozens of those scientists found in Iraq are no longer breathing or if they are they are *very* well incarcerated in the US mainland.
And if you were Hussein, knowing that the most powerful military in the world is coming a-knockin' on your door after making a drama worthy of a 10 year long soap opera about how evil you are by having WMD's stockpiled up and you knew there was no chance in hell your pathetic conscripted 3rd rate military could stop them...
how do you win? Hussein is not stupid. The only victory he could pull was to bring down US credibility by destroying his WMD's and making it appear he was just an innocent little dictator swatted because chimpy in the white house wanted his oil. boohoo. Never mind it would also rattle all the other arab states and such.
So far, Hussein is winnning the Public Relations war, which is the only one the average citizen in the world with access to TV sees. The REAL war, the one to eliminate the threat of terrorrism, is so far being won by the US and its true allies.
Really 10bears, think.