FC, you don't get it do you - revolution in KSA = no oil =world shortage = world slump 1930's style .
That was the logic behind going into Iraq. However,as Thomas Friedman nealty put in a recent article, the USA's appetite for oil is creating its trade deficit and funding some of the people who would like to destroy it. Why can't you all drive compact turbo diesels like most of Europe, then you wouldn't need Middle Eastern oil. Then I might be out of a job - not such a good idea after all.......