We do not really know what the military commanders think of this adventure. My recollection is that they were not very gung ho about it. Even the CIA warned of the possibility of Saddam transferring some of his arsenal to islamists if attacked.
Despite appearances, this administration may not be on the same page as the military leadershi - as the howitzer debacle may suggest.
As for Bush and Co, there is no doubt in my mind whatsover that this vermin will stop before nothing to enrich themselves and their cronies. But they can get fatter without going to war - all they need is to put their dirty hands on public coffers. It is not clear to me why they would want to take a risk of a not very popular military action if they can enrich themselves without going to war. What is their payoff?
PS. I agree with Mark Crispin Miller that Bush may be evil, but he is not stupid or psychopathic. So I do not think he needs that war to satisfy his lust for making others suffer. There must be some more tangible payoffs - if he really wants to do it, instead of playing a game of deceit.
Wojtek