During his tenure as Ambassador to Vietnam, Donal Read Heath advocated and carried out American policy under a United States Secretary of State for what president?   
Donald R. Heath: Donald Read Heath (August 12, 1894 – October 15, 1981) was a member of the United States Foreign Service for more than four decades including service as the Ambassador to Cambodia (1950–1954), Laos (1950–1954), Vietnam (1952–1955), Lebanon (1955–1957) and Saudi Arabia (1958–1961). John Foster Dulles: John Foster Dulles ( ; February 25, 1888May 24, 1959) served as United States Secretary of State under Republican President Dwight D. Eisenhower from 1953 to 1959.
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