Dubbya's not as stupid as everyone thinks he is ... you watch.
The game plan will be
1. Invade Iraq, kick out Saddam and instal US-friendly regime.
2. Get that Iraqi oil flowing to the USA again.
3. By virtue of steps (1) and (2) you have now secured an alternative supply of oil for the 'states before you carry out your main master plan, which is ...
4. Go in there and sort out the real bad boys of islamic fundamentalist terrorism, which is of course the Saudis themselves
THAT is the country that needs to be brought to heel. Has everyone forgotten the nationality of Osama himself (and 3/4 of the hijackers)? Saudi Arabia is the home of Islam, just like Rome and Catholicism. Just about all of the anti-US poison that sloshes around the middle east originates as edicts from a handful of the chief Islamic clerics and high priests, who are all Saudis, and all based in Mecca or Medina. The only way to get a long term resolution to this hate-America fixation that's been going on for decades is to isolate or depose that crowd.
It's that simple. This has got ****** all to do with Saddam getting hold of nukes, and to be honest I can't even see him being stupid enough to fire them if he had them. George Bush can't start a war with Saudi Arabia - or even start talking tough to them - until he's got his oil supply from elsewhere, and the only country that can supply it in the requisite amounts is Iraq.