Thomas G. Weiss is Presidential Professor of Political Science at The CUNY Graduate Center and Director of the Ralph Bunche Institute for International Studies, where he is co-director of the UN Intellectual History Project. He is President (2009-10) of the International Studies Association, chair (2006-9) of the Academic Council on the UN System (ACUNS). His latest book is What's Wrong with the United Nations and How to Fix It (2009).

As Research Professor at Brown University’s Watson Institute for International Studies (1990-98), he also held university administrative posts (Associate Dean of the Faculty, Director of the Global Security Program, Associate Director), was the Executive Director of ACUNS, and co-directed the Humanitarianism and War Project. Earlier, he was the Executive Director of the International Peace Academy (1985-9); a Senior Economic Affairs Officer at the UN Conference on Trade and Development in Geneva (1975-85); and held professional posts in the Office of the UN Commissioner for Namibia, the University Program at the Institute for World Order, the United Nations Institute for Training and Research, and International Labor Organization. He has been a consultant for foundations and numerous inter-governmental and non-governmental organizations and was editor of Global Governance (2000-5) and research director of the International Commission on Intervention and State Sovereignty (2000-2).