On January 5, 2006, he participated in a meeting at the White House of former Secretaries of Defense and State to discuss United States foreign policy with Bush administration officials. On January 31, 2006 he was appointed by the Secretary of State to be a member of the Arms Control and Nonproliferation Advisory Board. On May 2, 2006, he was named to be a co-chairman of a Defense Science Board study on DOD Energy Strategy. He was an honorary chairman of The OSS Society. He was also a Bilderberg Group attendee in 2008.