José Antonio Ocampo Gaviria is the Will Clayton Fellow in International Economics at the Baker Institute. He is also co-president of the Initiative for Policy Dialogue at Columbia University, where he is a professor and fellow. Until mid-2007, he was the United Nations under-secretary-general for economic and social affairs. In this post he directed the United Nations" Department of Economic and Social Affairs (DESA) and chaired the United Nations" Executive Committee on Economic and Social Affairs. With his appointment by Kofi Annan, United Nations former secretary-general, Ocampo obtained the highest post in the history of the United Nations to be held by a Colombian.