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Nandasiri Jasentuliyana is the President Emeritus of the International Institute of Space Law (IISL), formerly the Deputy Director-General of the United Nations Office at Vienna and Director of the United Nations Office for Outer Space Affairs. He holds advanced degrees in Law and International Relations from the Universities of Ceylon, London and McGill, and is an Attorney-at-Law – holding Diplomas in Aerospace Law and International and Comparative Law. He was the author of the four-volume Manual of Space Law, (1979), International Space Law and the United Nations, (1999); Perspectives on International Law, (1995); International Space Programs and Policies, (1984); and editor of Space Law: Development and Scope, (1991); and Maintaining Outer Space for Peaceful Uses, United Nations University (1984).


He has been a visiting lecturer at Princeton, Stanford, Columbia and McGill Universities and had been a guest lecturer at several universities in Europe and Asia. He is a Trustee of the International Academy of Astronautics (IAA), member of the Board of Directors of International Space University (ISU), and serves as a member of the Editorial Advisory Board of the Journal of Space Policy, published in the United Kingdom, and the Journal of Space Law, published in the United States. In 1982 he was the Recipient of the Testimonial Award of International Astronautical Federation (IAF) awarded annually in the recognition of important contributions to space law and policy, and in 1989 the recipient Leadership Award of the International Academy of Astronautics (IAA). He was selected by the United States National Space Society to its unique world-wide list of “100 space people who have had the greatest impact on our lives”.