"With the fall of Saddam and the marginalization of the Ba'ath Party in Iraqi politics, the balance of power in the Perisan Gulf region and indeed the whole Middle East is fundamentally altered. A rise of Iraq's Shi'ites will be felt by the entire Middle East - particularly states with their own sizable Shi'ite populations - and Iraq's immediate neighbors, which include Iran, Syria, Saudi Arabia, Kuwait, Jordan and Turkey. Iranian theocratic influence is now dominant in the Iraqi political milieu through the venue of democracy.
In the long perspective that governs national diplomatic priorities, the role of the US in the region remains transient, while the rise of Iranian theo-politics is a very serious long-term development for many counties in the region and the world, particularly the Sunni countries. Iran's 1979 theocratic revolution was not only a shock to the West, but to the entire Middle East and the Islamic nations of Asia. The US will go to any lengths to prevent the Iranian theocratic model from sweeping the region. The Ba'ath Party of Iraq, the history of which predates Saddam's rise to power, until its ill-advised marginalization by the US invasion authorities, had been the main bulwark against the Iranian model of Shi'ism in Iraq.
By the regime change carried out with the invasion of Iraq, the US has demolished that bulwark for no discernable geopolitical purpose. Sunnis in the region are now torn between their fear of a rise of the Shi'ites in Iraq and their commitment to Arab nationalism stimulated by foreign occupation. Neither option has any room for US superpower dominance. The abuse of superpower, and indeed the foolish squandering of superpower resources, appears to have rendered the world's sole superpower powerless to shape a new world order of peace, harmony and justice, diluting the sole justification for superpower existence."
http://www.atimes.com/atimes/Middle_East/FD20Ak01.html