The origins of U.S. intelligence, 1882-1919 -- A period of transition, 1919-1936 -- The origins of the national security state, 1936-1945 : Part I, domestic intelligence -- The origins of the national security state, 1940-1945 : Part II, foreign intelligence -- Bureaucracy and centralization, 1945-1952 -- Secrecy and the loss of accountability, 1952-1965 -- The breakdown of the Cold War consensus, 1965-1978 -- Reaffirmation of the national security state, 1979-2005 -- Hopes and realities.