http://www.peakoil.net/
The analysis of the Iraq war being fundamentally about oil and the need to preserve the oil price in dollars makes more sense to me than anything else I've read.
In november (I think) 2000 Saddam switched Iraqi crude oil exports from dollars to euros. That sealed his fate. America is terrified of OPEC charging in euros, because it would completely undermine the dollar as the worlds reserve currency.
And what was the first thing the coalition government in Iraq did? Reverted to selling oil in dollars.
If oil was priced in euros, America would have to EARN euros through exports in order to buy it. At the moment America effectively gets its (imported) oil for free by simply printing dollars. No wonder they want to keep it that way.
The peak oil website above gives more information on this phenomenum and how it will affect us all.