What's the libertarian take on foreign policy?

Welcome to Ask a Libertarian with Reason's Nick Gillespie and Matt Welch. They are the authors of the new book The Declaration of Independents: How Libertarian Politics Can Fix What's Wrong With America.
Go to declaration2011... to purchase, read reviews, find event dates, and more.
On June 15, 2011 Gillespie and Welch used short, rapid-fire videos to answer dozens of reader questions submitted via email, Twitter, Facebook, and Reason.com. In this episode, they answer the question:
What's the libertarian position on foreign policy?
For the complete series, go to reason.com/arch... and Reason.tv's KZbin Channel at youtubecom/reasontv
Produced by Meredith Bragg, Jim Epstein, Josh Swain, with help from Katie Hooks, Kyle Blaine and Jack Gillespie.