Bui Diem was born in North Vietnam and fled to the South after the 1954 Geneva Agreement. He became the publisher of an English-language newspaper and later joined Ngo Dinh Diem's government as an advisor. He was appointed South Vietnam's Ambassador to the United States in 1966 and served as such until 1972.

Relevant Links

Interview with Bui Diem.
From the Cold War program about Vietnam (George Washington University)
http://www.gwu.edu/~nsarchiv/coldwar/interviews/episode-11/bui1.html