 From 1987 to 1995, he directed the university's Institute of Security and International Studies.He served as advisor to the Thai House of Representatives' committee on foreign relations from 1987 to 1992, as policy advisor to Prime Minister Chatichai Choonhavan from 1988 to 1989, and as advisor to the house committee on parliamentary affairs from 1989 to 1991.From 1992 to 1993, he chaired the Ministry of Commerce's advisory board on international trade.