It does support the rationale for 'remedying' Iraq's non-compliance in the ways noted.
But a circle jerk ensues: It is The United Nations' ox which has been gored. The Dubya cabal has had Iraq in its sights since Daddy made a bad call, in 20/20 hindsight (this allegation is of the sort.. the usual never-to-be proven-in a Court of Law kind).
Additionally, various and unsatisfying allegations attempting to connect Saddam with Al-Q have been floated, along with other allegations, with the net result of this Admin attempting to portray Iraq as ~ The Next Best Target in (our self-defined set of) Evil States / the Domino theory of Vietnam redux.
Ergo: IF the UN cannot be coerced, cajoled, convinced! to support this planned invasion and the US goes ahead anyway: We shall be as guilty of 'noncompliance with the law' as is Iraq demonstrated to be.
(Of course we can always say - as Dubya has effectively 'said': So What? *OUR* Decision is that Iraq Makes Us Feel UnSafe. And this is enough to justify our doing Anything, anyWhere anyTime.)
Take yer pick; WHICH "UN Rulez" you wanna go by today.. Phony 'votes of Congress to abrogate Its Own Constitutional authority' == Responsibility, notwithstanding. Ditto on previous UN Resolutions defining what "breach of sanctions" might mean. IF THE UN won't agree and support this invasion Today? See above.
Ashton