The new revisionism
Noninterventionism -- the doctrine of peace and free trade -- has been the mainstream position of libertarianism for decades. It's the foreign policy position that's always been advocated by the main libertarian political party, the main libertarian think-tank and every Libertarian Party presidential candidate who comes to mind, such as Harry Browne, Ron Paul, etc.
It's easy to see why. At the end of the day, libertarianism (or classic liberalism) is the "mind your own business" doctrine. You can't really say, "I believe in minding my own business, but I support invading countries halfway around the world such as Iraq that represent no threat to the U.S., so that I can kill thousands of people who have never done me any harm."
Lately, there's been a revisionist line that insists that libertarianism is somehow inherently militaristic. That's the position taken by Eric Dondero, chairman of the "Libertarian Defense Caucus," who posted a comment to my Nov. 30 posting.
What do real libertarians believe? Here is a typical posting on the Cato Institute's blog. Here's another, by a different author.
Here is the Libertarian Party's current position on the war in Iraq, which criticizes Democrats for not moving decisively enough to get us out of the war: "The Democrats don't seem poised to do anything which will substantially change our presence in Iraq. It is time for U.S. forces to withdraw from Iraq as quickly as possible in a manner consistent with the with the safety of our troops."