Lord Stanley Kalms
Conservative Party donor, life president and former chairman of Dixons Retail
Mark Salter
Former chief of staff for John McCain
Otto J Reich
US Ambassador to Venezuela, 1986-89
Roger Noriega
Former State Department official and ambassador to the Organization of American States
Jack David
Deputy assistant secretary of defense 2004-2006
Walter Russell Mead
Professor at Bard College and a scholar at the Hudson Institute
Graham Allison
Director of the Belfer Center for Science and International Affairs and Douglas Dillon Professor of Government at Harvard's John F. Kennedy School of Government.
Irwin Cotler
Former Minister of Justice and Attorney General of Canada
Pauline Neville-Jones
Baroness in the House of Lords