I would suggest reading the Key Findings of the Duelfer Report (
http://www.cia.gov/cia/reports/iraq_wmd_2004/) it would seem to refute some of the assumptions of Miyagi's article. Especially statements such as:
"This despite the widespread media coverage in early
October of the CIA's "Duelfer Report" - the final word on the subject
by the one billion dollar, 15-month investigation by the Iraq Survey
Group - which concluded that Hussein had dismantled all of his WMD
programmes shortly after the 1991 Gulf War and never tried to
reconstitute them. "
It states in several of the Key Findings that "maintaining WMD was a national strategic goal." But that is really beside the point. The UN gave him an ultimatum. He was given plenty of time to comply. He didn't. The US carried out the ultimatum and the world is better off for it.