1912 - 1976,

1765 - 1833, Methodistischer Theologe

1928 - , Studium am Christ’s College der University of Cambridge (BA, MA) und der Yale University (MA, PhD). - 1948-1951 Pilot bei der Royal Air Force. - 1956 Assistent Professor am MIT in Cambridge, Massachusetts. - 1961 Associate Professor für European Diplomacy an der Johns Hopkins University in Baltimore, Maryland. - 1958/59 Rockefeller Fellow for Advanced Study. - 1964 Woodrow-Wilson-Professor of International Politics an der University of Wales, ab 1968 am King’s College London (Department of War Studies). - 1981 in Cambridge. - 1985-1990 Visiting Professor an der University of Wales. - 1991-1996 Leiter des Royal Institute of International Affairs in London. - 1998 Lehrstuhlinhaber am CSIS in Washington, D.C. - 2010 Bodichon Fellow am Girton College der University of Cambridge