Leadership & Experts
Senior Fellows
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Research Fellow of the Center for Disarmament, Science and Technology, The Japan Institute of International Affairs
OSUGI Shigeru
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Research Fellow at The Japan Institute of International Affairs
TAKASHIMA Asako
International Relations, Comparative Politics, German Politics, Japanese Politics
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Research Fellow at The Japan Institute of Internatinal Affairs.
YANAGIDA Kensuke
Development Economics, International Economic Issues in Asia and the Pacific, International Labor Migration
Research Fellows
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ARIGA Umi
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Research Fellow
IIJIMA Yumi
Chinese Diplomacy, International Politics, Environmental Politics
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Research Fellow / The Japan Institute of International Affairs (JIIA)
OTANI Takeo
International Relations, International Regime, Conflict Processes, Status Recognition, Japan-South Korea Relations
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Research Fellow at The Japan Institute of International Affairs.
KUWAHARA Kyoko
Public diplomacy, disinformation, strategic communications, soft power
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Research Fellow, The Japan Institute of International Affairs
KOMINAMI Yuki
International Politics, Security Studies, UK-US Relations, British Diplomacy
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SHIOJIRI Kotaro
International Economic Law, International Politics, Economic Security, Security Export Control
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Research Fellow at The Japan Institute of International Affairs.
SHIMIZU Sho
International Law, Space Law, International Environmental Law, Cyber Operation
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Research Fellow / The Japan Institute of International Affairs (JIIA)
TAKEZAWA Hironobu
Security Studies, Japanese Diplomatic History, Japanese Security, Japan-US Alliance, Alliance Politics
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Research Fellow at The Japan Institute of International Affairs
TAJIMA Michihiro
Civil-Military Relations (especially in Russia and Post-Soviet states), Security and International law in new domains (space, cyberspace, etc.)
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Research Fellow / The Japan Institute of International Affairs (JIIA)
TAMAMIZU Leo
Alliance Politics, Civil Wars, Security Relations in Asia Pacific, Social Science Methodology
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Research Fellow / The Japan Institute of International Affairs (JIIA)
TSUKAHARA Kotaro
Modern Japanese History, Elections and Party Organization, Comparative Political History
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Research Fellow of the Center for Disarmament, Science and Technology
WATANABE Fumitaka
CTBT (Radionuclide data processing and analysis)
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Research Fellow
LI Hao
Comparative Politics, Contemporary Chinese Politics, International Relations in East Asia
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Fellow at The Japan Institute of International Affairs.
IIMURA Tomoki
Political and Economic Issues in Korean Peninsula, Diplomatic Policy of East Asia, Economic policy of North Korea
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Research Fellow, the Center for Disarmament, Science and Technology, The Japan Institute of International Affairs
TAKAYAMA Yoshiaki
International Politics, Economic Security, Security Export Control
Secretary General for the Japan–China Joint Historical Research
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TOYAMA Shigeru
Senior Advisor, the Center for Disarmament, Science and Technology
Office of the President
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Senior Secretary
KOYAMA Yoko
Managing Directors, JIIA Platform
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General Manager
UMEMOTO Kazuyoshi
Environment, Society, Governance
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MIYAGAWA Maiko
National Power
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ISHII Masafumi
Diplomacy, Security
(Adjunct Fellow, JIIA)
JIIA Platform
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Project Director, JIIA Platform
SUGIMOTO Sadami
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JIIA Platform Program Officer
SHIGETA Tsubasa
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JIIA Platform Program Officer
HARA Takahide
International Relations in the Indo-Pacific Region
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JIIA Platform Program Officer/Research Fellow
YAMAGUCHI Kensuke
JIIA Center for Global Outreach (CGO) Fellow
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AKIYAMA Nobumasa
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OBA Mie
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KOTANI Tetsuo
JIIA Center for Global Outreach (CGO)
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Project Director
KAWAKAMI Yusuke
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Program Officer
OKUBO Hiromi
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Program Officer
KURIMOTO Kei
Senior Adjunct Fellows
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OKUWAKI Naoya
International Law
(Professor Emeritus, University of Tokyo) -
KIKUCHI Tsutomu
International Political Economy of the Asia-Pacific, Japan’s Diplomacy toward the Asia-Pacific, Analysis of Internal Conflicts
(Professor Emeritus, Aoyama Gakuin University) -
KUBO Fumiaki
U.S. politics and foreign policy, Japan-U.S. relations, international relations
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TAKAHARA Akio
Contemporary Chinese Politics, International Relations in East Asia (Special Visiting Professor, Tokyo Woman’s Christian University)
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TANAKA Akihiko
International Politics of Contemporary East Asia
(President, Japan International Cooperation Agency) -
HOSOYA Yuichi
British Diplomatic History
(Professor, Faculty of Law, Keio University)
Adjunct Fellows
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ASADA Masahiko
International Law
(Professor, Faculty of Law, Doshisha University) -
ASAHI Hideaki
Security Studies
(Former Professor, Graduate School, University of Tokyo) -
ARAKI Kiyoshi
(Former Ambassador to Turkey)
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IKAWA Takahiro
(President & CEO, Fujitsu Future Studies Center)
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ISHII Masafumi
(JIIA Platform Managing Director, Former Ambassador to Indonesia, Former Representative of Japan to NATO)
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ISHIKAWA Kazuhide
(Former Ambassador to the Philippines)
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INADA Juichi
Political Economy of International Development, ODA Evaluation
(Professor, Faculty of Economics, Senshu University; Visiting Professor, Johns Hopkins University SAIS [FY2023]) -
UMEDA Kunio
(Former Ambassador to Brazil; Former Ambassador to Vietnam; Vice President, NAGOMi – National Association for Global Mutual Support for Foreign Residents)
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ENDO Ken
EU Studies, Security, International Politics
(Professor, University of Tokyo) -
OSHIMA Shotaro
US–Japan Diplomatic History, Multilateral Trade and Investment Issues
(JIIA Board Member, Former Diplomat) -
KAGAWA Takehiro
Nuclear Disarmament/Non-Proliferation, Middle East, Economic and Trade Negotiations
(Hiroshima Peace Culture Foundation President, Former Ambassador to Egypt, Former Chief Negotiator for the TPP) -
KATADA Saori
International Political Economy, Japan’s Economic Diplomacy
(Professor of International Relations, University of Southern California) -
KANEHARA Nobukatsu
(Former Senior Officer for National Security, Former Assistant Chief Cabinet Secretary)
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KAMIYA Matake
Security, Japan-US Alliance
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KAWASAKI Kenichi
Impact Analysis of Economic Partnerships
(Professor, National Graduate Institute for Policy Studies) -
KUSAKA Sumio
(Former Ambassador to Australia)
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KURATA Hideya
Politics and Diplomacy of South and North Korea, Security
(Professor, Department of International Relations, National Defense Academy of Japan) -
KUROSAWA Mitsuru
Nuclear Disarmament/Non-Proliferation
(Professor Emeritus, Osaka University) -
SATO Heigo
International Relations, Security Studies, Export Control, Arms Control and Disarmament
(Professor, Faculty of International Studies, Takushoku University) -
SUZUKI Kazuto
International Political Economy, Science and Technology Policy, Space Policy, Security Export Controls, Economic Sanctions, Economic Statecraft, Nuclear Safety, European Integration, Middle East Issues
(Professor, Graduate School of Public Policy, University of Tokyo) -
SUZUKI Yoichi
(Former Ambassador to France)
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TAKEI Tomohisa
Maritime Security, Development of Maritime Defense Capabilities, Regional Maritime Cooperation
(Former Chief of Staff, Japan Maritime Self-Defense Force) -
TAMURA Shigenobu
Diplomacy, Security
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TSUGAMI Toshiya
Chinese Economy, Japan–China Relations, East Asian Economic Integration
(Director, Tsugami Workshop) -
TSUCHIYA Tomohiro
International Relations, Cybersecurity
(Executive Director, Keio University; Professor, Graduate School of Media and Governance, Keio University) -
NAKAGAWA Koichi
Middle East
(Senior Researcher, Mitsubishi Research Institute) -
NAKAKITA Toru
International Economics
(Professor, Faculty of Economics, Toyo University) -
HIKAWA Kazuko
Nuclear Disarmament/Non-Proliferation
(Deputy Director and Professor, Research Center for Nuclear Weapons Abolition, Nagasaki University) -
HIROSE Yoko
Post-Soviet Studies, International Politics, Russia, Frozen Conflicts, Unrecognized States, Hybrid Warfare
(Professor, Faculty of Policy Management, Keio University) -
MASUO Chisako
Chinese Politics and Foreign Policy, Maritime Policy
(Professor, Faculty of Social and Cultural Studies, Kyushu University) -
YAKUSHIJI Katsuyuki
(Professor, Faculty of Sociology, Toyo University)
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WATANABE Masaru
(Former Ambassador to Cuba)
Senior Fellow(non-resident)
Visiting Fellows
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NAGI Steven
Professor, International Christian University (ICU)
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AYU ANASTASIA RACHMAN
Assistant Professor, Bina Mandiri Gorontalo University
2025 Japan Foundation Southeast Asia Partnership (JFSEAP) Program Visiting Fellow -

VISITING FELLOWS
Junior Research Fellows
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The Center for Territory and History
KURAISHI Haruna
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The Center for Territory and History
HAYATA Kan
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The Center for Territory and History
MATSUSHITA Ryoji











