Lets see, Saudi is probably running out of oil while Iran is fully stocked. China and Russia are investing in Iran and the US is heavily invested in the relationship with Saudi, as they own US treasuries, US assets, and are the backbone for US oil imports.
We are in Iraq with a permanent force of 50,000. Perhaps the Bush-Cheney-Rumsfeld plan was to secure a source of oil all to itself since the rest of the middle east is set on destroying itself.
Neither Iran nor Saudi are democracies but unrest in Egypt, Tunisia, Yemen, Libya, Bahrain, etc is driven by high food prices which relates to climate change and peak oil.
Things that make you go hmmmm.
The New Cold War
There has long been bad blood between Iran and Saudi Arabia, but popular protests across the Middle East now threaten to turn the rivalry into a tense and dangerous regional divide.
For three months, the Arab world has been awash in protests and demonstrations. It's being called an Arab Spring, harking back to the Prague Spring of 1968.