Hortlund, I suggest you chill. You're going to do yourself an injury.
Try harder Beetle.
Last time I checked, none of the 9-11 hijackers were Iraqi. The link between Iraq and Al Queda is tenuous at best and revolves around camps in the north of the country, the very same type of camps that reside in Saudi and several other 'friends'. Also, the IRA had cells operating in the US, but no one would suggest there were links between official government and them. MI6 said there was a fledgling relationship, but it floundered because of acute ideological differences.
In terms of international relations, war is generally viewed as just when the nation instigating the conflict has been attacked - i.e. a war in self-defence. Iraq has not attacked the US. It has engaged USAF/RAF fighters over the no-fly-zones, but these are NOT UN mandated and never have been. Hence, quite frankly, they can engage whoever they like over their air space.
A UN mandate keeps dialogue between certain 'problem' states open and free-flowing. It also gives them the idea that they are not side-lined on this issue. Bush Snr and Baker spent a huge amount of effort keeping a coalition together regarding the last Gulf war - the result was a successful outcome. A cowed and much weaker Iraq which had 95% of it's WMD destroyed and it's armed forces in ruins. It's called diplomacy.
Iraq is not Afghanistan. The evidence is not as forthcoming or as clear-cut. To me that speaks volumes.
If the major players within the UN cannot commit themselves to non-aggressive conflict, then why should any other State? How can the West dictate how 'things should be done' with this precedence in place? I don't think it can.
I'm not so sure France won't back down in the end. There's too much for it to lose. I believe there will be more evidence discussed at the UN soon.