I see that it has been almost one year since anyone has added their thoughts to this topic.

I am a Vietnam veteran (68-69 U.S. Army). I bought into the idea of pre-emptive war in Iraq, because that is what the USA did against Hitler in World War II, justifying American military action in Europe by the Japanese attack on Pearl Harbor. Sure, Iraq did not directly attack the USA, nor did the Germans.
For nearly 40 years, I have held a belief that if the U.S. Military had unleashed its full force in Vietnam, we would have won. Well, that is exactly what we saw in Baghdad on March 20, 2003. The U.S. Military called it “Shock and Awe” - it was spectacular and we did win. I was proud of the U.S. Military. But, the war did not end... just like Vietnam, we can win the battles but we cannot successfully “occupy” a country that does not want us. (Not without using brutal suppression that would violate our own values.)
If the Iraq war had ended within 18 months, as the supporters of the war believed it would, then the Bush Presidency would have been honored as visionary. But, that did not happen. Perhaps if the Vietnam War had ended successfully within a year or two, then President Johnson would be considered a hero and a visionary today, but that did not happen either.
The Middle East is not Vietnam. There is big difference between the Vietnam War and the war in Iraq. The difference is the oil in the region and the importance of oil in the world economy; specifically the importance of oil as a source of energy (transportation fuels). Our dependence on oil to produce gasoline, diesel and jet fuel makes us vulnerable to shortages. An interruption of the supply of oil anywhere in the world affects everyone because oil is a global commodity. The Middle East has about 60% of the world's known oil reserves; if the U.S. Military pulls out of Iraq allowing civil war and sectarian violence to escalate, causing the region to fall into the hands of Islamic militants who hate the United States and western values, then
Middle East oil would become a weapon of political extortion subjecting the United States and Europe to economic terrorism by threatening the global economy with oil supply interruptions.
The United States walked away from Vietnam with only a loss of national pride and nothing to show for the deaths of fifty thousand U.S. soldiers, but otherwise the loss of Vietnam had no influence on the U.S. or world economy. If we walk away from the Middle-East, we better have a plan to end the global economic influence of Middle East oil.
Is there anyone who still cannot see the connection between the flow of oil money into the Middle East and the flow of terrorism out of the Middle East? Take a look at this:
Nexus—OIL and AL Qaeda, By Frank H. Denton, PhD
www.AmericanEnergyIndependence.com/nexus.html —an in-depth explanation of the connection between Middle East oil revenue and the worldwide expansion of Islamic terrorism.
Frank Denton has a PhD in foreign affairs and is the author of Knowing the Roots of War and several other books. He spent a decade with the RAND Corp. before joining the U.S. Foreign Service. He served in Afghanistan, Jordan, Egypt and the Philippines as well as in Washington. He is now retired.
The discussion paper reads like a History Channel documentary:
“The meteoric rise of oil revenues in the 20th century meant a new era for Islam; oil revenues were the catalyst that converted passive resentment into Islamic Terrorism.
“Oil provides the revenues for the Fundamentalists, but it as well represents their basic weakness. An examination of the economies of Middle Eastern nations shows that the removal of oil revenues will render these nations politically inert. Recognizing this economic weakness, a global embargo of oil imports from the Middle East is shown to be an attractive means for defeating Al Qaeda. Severely curtailing then eliminating the reliance on Middle East oil will decimate the Islamic terrorists by cutting off both emotional and financial support.” Contents:
Part 1 - Oil, the catalyst for the formation of Al Qaeda
Part 2 - Financing the Jihadists
Part 3 - Islam’s Oil Addiction
This eloquent exposé on the connection between oil wealth and terrorism leads to the undeniable conclusion that energy independence is an imperative for achieving national and global security. Frank Denton brings a new depth of insight to this complex and multi-faceted subject.