UN Under-Secretary-General for Economic and Social Affairs Mary Robinson, the first female President of the Republic of Ireland; United Nations High Commissioner for Human Rights Arvind Panagariya, professor of economics Kenneth Prewitt, political scientist and former director of the United States Census Bureau David Rothkopf, chairman and CEO of The Rothkopf Group, and Garten Rothkopf, and former Deputy Undersecretary of Commerce for International Trade Jeffrey Sachs, chief economic advisor to many governments, former Director of the UN Millennium Project, Special Advisor to United Nations Secretary-General on the Millennium Development Goals Giovanni Sartori, Albert Schweitzer Professor Emeritus in the Humanities at Columbia University Stephen Sestanovich, former Ambassador-at-large and Special Advisor to the Secretary of State on the New Independent States (NIS) Gary Sick, Iran expert and three-time member of the National Security Council David Siegel - Adjunct Professor of Entrepreneurial, Organizational and Strategic Management ; CEO of Investopedia David C. Stark, professor of sociology Alfred Stepan, professor of government Joseph Stiglitz, Nobel Prize-winning former Senior Vice President and Chief Economist of the World Bank and former chair of the President's Council of Economic Advisors Kenneth Waltz, one of the most influential international relations scholars. He is one of the founders of neorealism, or structural realism, in international relations theory. Notable former faculty Ernst Jaeckh (1875–1959), German-born orientalist and founder of the Middle East Institute Lisa Anderson, former dean of SIPA and a leading expert on the Middle East; former president of the American University in Cairo Zbigniew Brzezinski, National Security Advisor under U.S. President Jimmy Carter Robert C. Lieberman, former interim dean of SIPA and provost of the Johns Hopkins University John Ruggie, former dean of SIPA; former Assistant Secretary-General and chief advisor for strategic planning to United Nations Secretary-General Kofi Annan. He continues to serve as the UN Secretary General's Special Representative for Business and Human Rights Zalmay Khalilzad, former United States Ambassador to the United Nations Amina J. Mohammed, Deputy-Secretary-General of the United Nations and former Ministry of Environment of Nigeria Notable former international fellows Michael Armacost, diplomat, Deputy Secretary of State, president of Brookings Institution Bonnie Erbe, host of the PBS television show To the Contrary Harold Varmus, Nobel Prize winner, head of National Institute of Health Jim Hightower, progressive activist Richard M. Smith, chairman and editor-in-chief of Newsweek Frederick Kempe, president, Atlantic Council of the United States References External links Columbia University School of International and Public