Thanks for the clarifications! (Uta; you're right, see how forgetting one word can lead to misunderstanding?

)
Beyond the generally accepted "rules", I'd like to believe that a counter-strike to a WMD (Weapon of Mass Destruction) would be in a similar proportion i.e. you shouldn't be nuking 100'000 people out of existence because a dozen guys got terminally sick on the battlefield. Without this "measured response", there would be an infinite escalation of blows, which, in the case of nukes, would affect the surrounding countries (remember Chernobyl?).
As for what Iraq would ACTUALLY do, I (also) like to believe that the whole regime is on the brink of a civil revolution, but for some reason, it's just not happening. Does anyone know why?
My next question would be: what would be the mandate of a UN order?