Research/Areas of Interest: -International Organizations -United Nations -Peace Operations -Proliferation of Weapons of Mass Destruction -International Law and International Relations Theory


  • LLM, Columbia University, New York, United States, 1990
  • JD, University of Toronto, Toronto, Canada, 1987
  • BA, International Relations, University of Toronto, Toronto, Canada, 1983


Ian Johnstone is a Professor of International Law at The Fletcher School of Law and Diplomacy at Tufts University. He has been a faculty member since 2000. From 2018 to 2019, he served as Interim Dean. Prior to that from 2013 to 2015, he was also the Academic Dean. Before joining Fletcher in 2000, he served in the United Nations' Executive Office of the Secretary-General. His most recent books include "The Oxford Handbook on International Organizations," (Co-editor, Oxford University Press, 2016); "Law and Practice of the United Nations, 2nd edition," (co-author, Oxford University Press, 2016); and "The Power of Deliberation: International Law, Politics and Organizations," (Oxford University Press, 2011). Selected articles and book chapters include "The evolution of the United Nations Charter" in Simon Chesterman et al eds., "The Oxford Handbook of UN Treaties," (Oxford University Press, forthcoming 2018); "The UN Security Council and International Law" in Sebastian von Einsiedel et al eds., "The United Nations Security Council in the 21st Century," (2016); "When the Security Council is Divided: Imprecise Authorizations, Implied Mandates and the Unreasonable Veto" in Marc Weller ed, "Oxford Handbook of the Use of Force," (2015); "Law-making by International Organizations: Perspectives from International Law/International Relations Theory", in Jeff Dunoff and Mark Pollack eds "Interdisciplinary Perspectives on International Law and International Relations: The State of the Art," (2013); and "Legislation and adjudication in the UN Security Council: bringing down the deliberative deficit," American Journal of International Law (2008). From 2005-2007, he was the lead author and founding editor of the Annual Review of Global Peace Operations. He is currently on the editorial boards of Global Governance Journal and International Organizations Law Review. Johnstone, recipient of the James L. Paddock Teaching Award in 2005, teaches courses in international organizations and peace operations. He continues to serve as a regular consultant to the United Nations, and is a Non-Resident Senior Fellow at the Center on International Cooperation, New York University. A citizen of Canada, he holds an LL.M degree from Columbia University and JD and B.A. degrees from the University of Toronto.
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