Bill Christison joined the Central Intelligence Agency in 1950 as an analyst. He worked on Soviet affairs and nuclear proliferation. In the 1970s, he was a principal adviser to the CIA director for Southeast Asia, South Asia and Africa. His final position was director of the agency’s Office of Regional and Political Analysis. He met his wife Kathy, who also worked for the CIA, during a tour in Saigon in the 1970s. Together they made multiple trips to the Middle East and wrote books on Palestine. He died in June 2010.