Christiane Amanpour travels to North Korea with the New York Philharmonic for its February 2008 performance in Pyongyang. Included: a tour of a nuclear facility; a visit with a North Korean family; and interviews with Christopher Hill, the lead U.S. negotiator with North Korea; North Korean deputy foreign minister Kim Gye Gwan; Madeleine Albright; former defense secretary William Perry; and the Philharmonic's Lorin Maazel and South Korean-born violinist Lisa Kim.

• Anderson Cooper