Student Study of international relations (diplomatic course) at the Institute of International Relations, Potsdam-Babelsberg, 1984. Masters (honorary), Political Science, 1986. Doctor rerum politicarum (honorary), Institute of International Relations, Potsdam-Babelsberg, 1989.
Private secretary Prime Minister Higher Education Hun Sen, 1990—1991. Official member Secretariat of the Supreme National Council, 1991—1993. Deputy general-secretary Constituent Assembly, 1993.
Under secretary of state Permanent Secretary of the Ministry of Foreign Affairs and International Cooperation of the Kingdom of Cambodia, 1996—1997, secretary of state, 1997—2004. Ambassador Canada; permanent representative of Cambodia to the United Nations New York City, since 2004. Member Board of Director Royal School of Administrator, since 1995, Board of Director Cambodia Development Resource Institute (CDRI), 2000.
Married; 3 children.