The Carter Doctrine, established 28 years ago, put the US military in service of assuring the nation’s regular supplies of imported oil. This has near-bankrupted the US and corrupted the military, yet left the US insecure in energy sources and globally loathed. The time has come to demote petroleum and stand down the troops.
I will add one more element to this: Bush is endangering the at least defensible goal of energy security with one that is not--forcing the Iraqis to give up most of the profits of their oil to big oil companies in the Hydrocarbon Law.
A possible result of this is that once our military is further weakened or we withdraw, Iraq could cancel contracts and laws they were coerced into signing, and cut off our oil as happened with the Saudi embargo in the 70s when they were mad at us for backing Israel in the Yom Kippur War, and when America lost any diplomatic influence over Iran after the revolution because we had backed the oppressive Shah for decades, and the Shah was installed because the OIL COMPANIES asked us to get rid of Iran's democratically elected president who wanted to nationalize their oil.
More recently, the demonization in the US press of the democratically elected Hugo Chavez of Venezuela has far more to do with how he treats oil companies than how he treats his own people. Bush backed one failed coup against him, but if he succeeds at another or has Chavez assassinated, the results will be still more disruption of the oil supply.
If Obama is the candidate for change, this is the change we need most. Abraham Lincoln freed African Americans from slavery--will our first African American president free all of us from an oil industry that robs us not only of our wealth at the gas pumps, but our tax dollars to fight wars to seize oil reserves, and the lives of idealistic young soldiers who fight in those wars?