Little Johnny Cowards participation in this war probably has far more to do with the fact the Australian Wheat Board (while wholly owned by the Federal Government) were caught red handed bribing Saddam and busting the sanctions..
just to complete the picture of threats at the time, the existence of a WMD parts network from lybia to nk via the middle-east was well known by competent agencies, some hard stuff coming from russian arsenals, some soft stuff from pakistan... pakistan's khan only came out officially in jan 2004, 10 mths after the start of the iraq war... http://en.wikipedia.org/wiki/Abdul_Qadeer_Khan involving iran as well (not iraq) people can think what they want but as a leader, post 9/11, when you know the WMD parts traffic is going on in the region, you know who the end-buyers might be and where they want to "deliver", nobody really wants to help you on the basis of unity / non-interference in the fight against a common US "enemy", and you have a saddam & sons playing all sorts of games the way he has, and france stupidly helping him make the relevant UN resolutions unenforceable, its pretty clear what your options are... thats not to say that the ire against 60 years of naive and overly aggressive US foreign policy in the middle east (incl CIA-overthrow of a number of democratically-elected but unfavorable secular leaders) is unjustified though... not at all... if it weren't for these stupid acts of aggression, the radical islamists wldn't be where they are today... still, who would wait for the nuclear strike itself as conclusive evidence?