1971, BA, Political Science, and 1976, PhD, Political Science, Univ. of Tokyo. Former: Lecturer, Rikkyo Univ.; Associate Professor, College of Law and Politics, Rikkyo Univ.; Visiting Fellow, Princeton; Professor, College of Law and Politics, Rikkyo Univ.; Professor, Graduate Schools for Law and Politics, Univ. of Tokyo; Ambassador Extraordinary and Plenipotentiary and Deputy Permanent Representative of Japan to the UN; Professor, Graduate Schools for Law and Politics, Univ. of Tokyo. Since 2009, Executive Director, Research, Institute for Int'l Policy Studies. Since 2012, Professor, Nat'l Graduate Institute for Policy Studies and President, Int'l Univ. of Japan. Member, chairman, fellow, past or present, numerous councils, bodies, task forces and groups. Author. Recipient of awards and honours.