Pat Buchanan's magazine "The American Conservative" formally endorsed Ron Paul for President:
On the key issue of foreign policy, the differences between the other Republican contenders can be measured in microdots. All remain enthusiastic supporters of the invasion of Iraq and of maintaining a presence there for years to come. All speak as if it is America’s right and duty to station its armed forces over much of the world. All have embraced neoconservative paranoia about the “threat” posed by Iran, setting the table for another war. All, that is, except Dr. Paul.
He is the one candidate who sees how the realities of world power have shifted since the 1990s, the one who recognizes that the time of unilateral American hegemony is over—and can’t be maintained even if it was in our interest to do so. He alone understands that the ever expanding federal government is a far greater threat to American liberty than some tinpot dictator in the Caucasus. By speaking about the benefits of smaller government and limited executive power, he has introduced a generation of young Americans to a more traditional and true style of conservatism—to the movement and the country’s benefit.
The whole endorsement is here.