 He has also received awards from Columbia University, Stanford University, Georgetown University, the Fletcher School of Law and Diplomacy (Tufts), and Curtin University.Koh is an international law professor, action and Ambassador-at-Large for the Singaporean government.He presently serves as Special Adviser at the Institute of Policy Studies, Chairman of the National Heritage Board, Chairman of the Governing Board of the Centre for International Law, and Rector of Tembusu College at the National University of Singapore.