Melvin Laird was President Nixon’s secretary of defense and was the chief architect of the withdrawal of American forces from Vietnam. He recently broke a 30-year silence about foreign-military affairs to discuss Iraq with “Iraq: Learning the Lessons of Vietnam,” in Foreign Affairs magazine. His conclusion?

"President Bush does not have the luxury of waiting for the international community to validate his policies in Iraq. But we do have the lessons of Vietnam. In Vietnam, the voices of the “cut-and-run” crowd ultimately prevailed, and our allies were betrayed after all of our work to set them on their feet. Those same voices would now have us cut and run from Iraq, assuring the failure of the fledgling democracy there and damning the rest of the Islamic world to chaos fomented by extremists. Those who look only at the rosy side of what defeat did to help South Vietnam get to where it is today see a growing economy there and a warming of relations with the West. They forget the immediate costs of the United States’ betrayal. Two million refugees were driven out of the country, 65,000 more were executed, and 250,000 were sent to “reeducation camps.” Given the nature of the insurgents in Iraq and the catastrophic goals of militant Islam, we can expect no better there.

As one who orchestrated the end of our military role in Vietnam and then saw what had been a workable plan fall apart, I agree that we cannot allow “another Vietnam.” For if we fail now, a new standard will have been set. The lessons of Vietnam will be forgotten, and our next global mission will be saddled with the fear of its becoming “another Iraq.”'