Thirty years ago, Cheney became President Gerald Ford’s chief of staff, and his close colleague, Donald Rumsfeld, became the secretary of defense. The two men had a clear security agenda to reverse the moderate policies of President Richard Nixon. This required weakening the negotiating powers of Secretary of State Henry A. Kissinger, ending arms control and disarmament negotiations with the Soviet Union, slowing the pace of détente with the Kremlin, and ending the dialogue with China. Cheney and Rumsfeld also targeted the CIA, believing that the agency was not being responsive to their foreign policy concerns and that the CIA’s...