In reply to:

I just don't understand. How are they not complying?



Possibly by firing upon U.S. planes patrolling the 'No Fly' zone? Pissing on the Safwan Treaty for 11 years? Not allowing Iraqi scientists to be interview without Iraqi intelligence being present? Iraqi military posing as scientists to answer U.N. investigator's questions in a 'politcally correct' fashion? Not reporting dozens of fully-functional chemical warheads?

Just a guess, but sooner or later, the U.S. is going to decide that they have put up with enough.