Want to know more about about this week's guests and topics?
Try clicking on some of these links:
• Ambassador Nicholas Burns, Under Secretary of State for Political Affairs | Bio
• Ashton Carter, Co-director of the Preventive Defense Project at Harvard's Kennedy School of Government and Former Assistant Secretary of Defense for International Security Policy | Bio
• Robert L. Gallucci, Dean, School of Foreign Service, Georgetown University and Chief Negotiator for the 1994 North Korea Nuclear Agreement | Bio
• Gov. Bill Richardson (D-NM), Former Secretary of Energy and Former U.S. Ambassador to the United Nations | Bio