Career
Revolutionary work, Hung Dung Commune, Vietnam, 1945;
member youth organization administrative work, Fourth Interzone, Vietnam, 1947;
with various departments, Ministry of Foreign Affairs, Vietnam, 1952;
ambassador to Hungary, Austria and Iran, 1973-1977;
ambassador Federal Republic Germany, Austria, Iran, and Switzerland, 1977-1981;
vice minister, Ministry of Foreign Trade, Vietnam, 1981-1987;
ambassador Soviet Union, 1987-1991;
minister foreign affairs, 9th Session National Assembly Socialist Republic Vietnam (8th Legislation), Vietnam, since 1991. Member Control committee Communist Party Vietnam 6th Congress, 1986, 7th Congress, 1991. Member National Assembly Vietnam, since 1992.
Member Common for National Defense and Security, 1992.