Who says the UN is not in Iraq ? if you oblige, have a look at the following website, it is very informative. (eg. Fallujah report Jan 2005)
You might realize that the main obtacle in any kind of humanitarian or purposeful public work in Iraq is (your guess).
As far as "law enforcement" is concerned, the UN, in the hypothesis it was an autonomous organization capable of taking any decision on its own (which would make SlamClick happy), has no view on putting anything wearing an helmet and a rifle in Iraq. Though, beret wearing UN personel do participate in training Iraqi Police and specialized services.
If one counts on the UN to take over even part of the "military and security duties", I ask you: which country will send troops ?
Even the French government (yes you read well, from France) last spring (2004) studied (and acknowledged) the eventuality of sending troops to Iraq.
In September they came to the conclusion that it will happen, just it does not fit in the present context, nor does it suit Washington.
Everything would be so simple if it was but black and white...and like POTUS says it is.
No WMD's were found. That does not mean they were not there. It just means they were not found. They may have been dismantled or moved in the lead-up to the war.
It is about time you fix your misconceptions.
1/ WMD are nothing without material means and human resources to deliver them. Iraq did not have them.
Read the US final report on WMDs, it clearly says "had Iraq had the means it would have taken them at least 10 years to build anything". Your Senate and your House did understand, why dont you ?
2/ while US intelligence capacity was not only questioned but found deficient in the USA
(and only there), for the purpose of an excuse, US intelligence capabilities are nowhere near poor or deficient in reality.
Keeping alive the hypothesis of "they were hidden - they were moved - etc..." is nothing else than a blatant attempt to leave an uncertainty in the US public mind. Get over it, there is not a single camel that can move an inch without being monitored, let alone the dozens of special trucks that would be needed to move anything of substance. Even underground facilities are perfectly detectable, whatever their depth.