Back in 2004, I sat down for an at-length interview with Sen. Joe Biden (D-DE) in his office on Capitol Hill. The context of the time was the 2004 presidential election, John Kerry, and the foreign policy particulars of four years ago. But I think it's still a very valuable prism to understand how he thinks about foreign policy. Biden is going to do plenty of interviews about foreign policy questions over the next two months. But it will be in the context of his running as the Democratic vice-presidential nominee. So obviously he'll be more careful, more scripted, less willing to think outloud about Iraq, Afghanistan and the differences between Democratic and Republican foreign policy thinking. Take a look.