Experts Yuichi Hosoya
Group Head, Europe ＆ Americas ／Director of Research, Asia Pacific Initiative
Director, International House of Japan
Director, International House of Japan
Profile
Yuichi Hosoya is professor of international politics at Keio University, Tokyo. Professor Hosoya was a member of the Advisory Board at Japan’s National Security Council (NSC) (2014-2016). He was also a member of Prime Minister’s Advisory Panel on Reconstruction of the Legal Basis for Security (2013-14), and Prime Minister’s Advisory Panel on National Security and Defense Capabilities (2013). Professor Hosoya studied international politics at Rikkyo (BA), Birmingham (MIS), and Keio (Ph.D.). He was a visiting professor and Japan Chair (2009–2010) at Sciences-Po in Paris (Institut d’Études Politiques) and a visiting fellow (Fulbright Fellow, 2008–2009) at Princeton University.
[Concurrent Position]
Professor, Faculty of Law, Keio University
[Concurrent Position]
Professor, Faculty of Law, Keio University
Expertise
The postwar international history / British diplomatic history / Japanese foreign and security policy / Contemporary East Asian international politics
Publications
Security Politics: Legislation for a New Security Environment (Tokyo: JPIC, 2019)
Research
Diplomacy
Why Takaichi Can’t Be the Next Shinzo Abe
As the clearest political heir to former Prime Minister Shinzo Abe, Prime Minister Sanae Takaichi faces a defining question: Can s
Group Head, Europe ＆ Americas
Yuichi Hosoya
Diplomacy
Trump’s new world order and what it means for Japan
Just 18 months into his second term, and with the U.S. midterm elections approaching, U.S. President Donald Trump has generated a
Group Head, Europe ＆ Americas
Yuichi Hosoya
Economic Security
Strategy Amidst Weaponized Economics
How Korea Learned to Navigate Weaponized Economics / Europe's Response: From Dependence to Resilience / Can Middle Powers Shape th
Group Head, Europe ＆ Americas
Yuichi Hosoya
Diplomacy
Will the “UK-China Golden Era” Return?
On January 31, 2026, during his visit to Japan, British Prime Minister Keir Starmer held a summit with Prime Minister Sanae Takaic
Group Head, Europe ＆ Americas
Yuichi Hosoya
Diplomacy
A Message from Yuichi Hosoya on Our Latest Special Feature: How Will the Trump Administration Change the World in 2025?
The inauguration of Donald Trump’s second administration on January 20, 2025, has drawn unprecedented global attention. Dubbed "Tr
Group Head, Europe ＆ Americas
Yuichi Hosoya
Experts in Geoeconomics
Experts-
Yuki GotoVisiting Research FellowYuki Goto is a Visiting Research Fellow at the Institute of Geoeconomics. He has led the intelligence of external affairs at Japan Petroleum Explorati…View Profile -
Takashi ItoVisiting Senior Research FellowAfter graduating from Keio University, he joined Mitsubishi Electric Corporation, where he was engaged in the semiconductor business, covering manufac…View Profile - Koki ShigenoiVisiting Research FellowKoki Shigenoi is Visiting Researcher at the Interfaculty Initiative in Information Studies (III), The University of Tokyo, and Associated Researcher a…View Profile
- Takayoshi FukuyoVisiting Research FellowTakayoshi Fukuyo is the CEO and Founder of ArkEdge Space Inc., a Tokyo-based startup delivering micro-satellite constellation solutions from planning …View Profile
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Letizia SueraResearch AssistantLetizia Suera is a Research Assistant with the Economic Security Group at the Institute of Geoeconomics (IOG) and a Capacity Building Associate at the…View Profile - Yoshiyuki KatoVisiting Senior Research FellowYoshiyuki Kato was born in Aichi Prefecture in 1979, he received his Ph.D. from Princeton Theological Seminary. After serving as Associate Professor a…View Profile
- Eyck FreymannVisiting Research FellowEyck Freymann is a Hoover Fellow at Stanford University, where he directs the Allied Coordination Working Group. He is also a Visiting Fellow at the I…View Profile
- Yoshiyuki FukudaVisiting Research FellowYoshiyuki Fukuda is a macroeconomist and financial strategist with over 20 years of experience spanning central banking, international organizations, …View Profile
- Kasumi YamazakiSecretary General ／Senior Executive Vice PresidentKasumi Yamazaki has served as the inaugural Secretary General and Senior Executive Vice President of the Institute of Geoeconomics (IOG) since January…View Profile
- Makoto OuchiProgram OfficerMakoto Ouchi is a Program Officer at the Institute of Geoeconomics (IOG). He actively engages in the planning and management of workshops and programs…View Profile
- Kikyo TaguchiResearch AssistantKikyo Taguchi assumed her current position in July 2025, after serving as a Researcher/Advisor in the Political Section at the Embassy of Japan in Ger…View Profile
- Gabriele MalettaResearch AssistantResearch Assistant at the Institute of Geoeconomics (IOG). Specialised in Japan-EU foreign relations and European Security and Defence, Gabriele holds…View Profile
- Masayoshi UnoResearch AssistantMasayoshi Uno is a Research Assistant at the Asia Pacific Initiative (API) & the Institute of Geoeconomics (IOG), the International House of Japan…View Profile
- Manish SharmaVisiting Research FellowManish Sharma is an ex-investment banker, with over two decades of experience spanning academia, consulting, think tank and corporate finance. His aca…View Profile
- Masahito KanekoResearch AssistantMasahito Kaneko is a Research Assistant of the China Group at the Institute of Geoeconomics (IOG). He specializes in the History of International Rela…View Profile
- Kuniharu KakiharaGroup Head, International Security Order / Visiting Senior Research FellowBorn in 1964, Kuniharu Kakihara graduated from the National Defense Academy and holds master’s degrees in Regional Studies from the University of Tsuk…View Profile
- Shin OyaVisiting Senior Research FellowMr. Oya assumed current position from November 2024. Prior to that, he worked at the Japan Bank for International Cooperation (JBIC), where he was inv…View Profile
- Kenichi DoiSenior Research FellowSenior Research Fellow of the China Group at the Institute of Geoeconomics (IOG). Doi specializes in China and the world (geoeconomic issues, such as …View Profile
- Yoshimi IgawaVisiting Research FellowIGAWA Yoshimi (Ph.D.) is a Professor at the Faculty of Economics and Business Administration, Business School, Kyoto University of Advanced Science. A…View Profile
- Eiki TagamiVisiting Senior Research FellowEiki Tagami is a visiting senior research fellow in Institute of Geoeconomics at International House of Japan from May 2024. With over 30 years of exp…View Profile
- Mariko TogashiVisiting Research FellowMariko Togashi has been a Visiting Research Fellow at the Institute of Geoeconomics (IOG) since January 2024. Prior to IOG, Mariko was a Research Fell…View Profile
- Kota UmedaSenior Research FellowKota Umeda is a research fellow at the Institute of Geoeconomics at the International House of Japan. From 2015 to 2025, he worked at the Japan Aero…View Profile
- Andrew CapistranoVisiting Research FellowAndrew Capistrano is a geopolitical risk consultant based in Tokyo, and Director of Research at PTB Global Advisors in Washington, DC, where he specia…View Profile
- Paul NadeauVisiting Research FellowPaul Nadeau is an adjunct assistant professor at Temple University's Japan campus, co-founder & editor of Tokyo Review, and an adjunct fellow…View Profile
- Satoshi YamadaVisiting Senior Research FellowSatoshi Yamada has been a visiting senior research fellow at the Institute of Geoeconomics (IOG) since 2022. He has over 25 years’ experience in the J…View Profile
- Hirohito OgiSenior Research FellowHirohito Ogi is a senior research fellow at the Institute of Geoeconomics (IOG) studying military strategy and Japan’s defense policy. Before joining …View Profile
- Naoko EtoVisiting Senior FellowNaoko Eto is a professor in the Department of Political Science at Gakushuin University. Her main research interests include East Asian affairs and Ja…View Profile
- Makoto ShionoGroup Head, Emerging Technologies ／Director of ManagementMakoto Shiono holds a B.A. in Political Science from the Faculty of Law at Keio University and a Master of Laws (LLM) from Washington University (St. …View Profile
- Kazuto SuzukiDirector & Group Head, Economic SecurityKazuto Suzuki is Professor of Science and Technology Policy at the Graduate School of Public Policy at the University of Tokyo, Japan. He graduated fr…View Profile
- Yuichi HosoyaGroup Head, Europe ＆ Americas ／Director of Research, Asia Pacific Initiative
Director, International House of JapanYuichi Hosoya is professor of international politics at Keio University, Tokyo. Professor Hosoya was a member of the Advisory Board at Japan’s Nationa…View Profile - Hotaka MachidaVisiting Senior Research FellowMACHIDA Hotaka is a visiting senior research fellow in Institute of Geoeconomics at International House of Japan. He joined the Institute in October, …View Profile
- Kousuke SaitoVisiting Senior Research FellowSAITOU Kousuke is a professor at the Faculty of Global Studies, Sophia University, Japan. He received his Ph.D. in International Political Economy fro…View Profile
- Yoshiyuki SagaraSenior Research FellowYoshiyuki Sagara is a senior research fellow at the Asia Pacific Initiative (API), where he focuses on economic security, sanctions, health security p…View Profile
- Ken JimboManaging Director (Representative Director), International House of Japan ／President, Asia Pacific InitiativeJIMBO Ken is Professor at the Faculty of Policy Management, Keio University. He served as a Special Advisor to the Minister of Defense, Japan Ministry…View Profile
- Hitoshi SuzukiSenior Research Fellow ／COO, LLC future mobiliTy researchHitoshi Suzuki (PhD) was Associate Professor at the Graduate School of International Studies and Regional Development, University of Niigata Prefectur…View Profile
- Rintaro InoueResearch FellowRintaro Inoue is a Research Fellow at the Institute of Geoeconomics, International House of Japan, and a PhD student at Keio University. His research …View Profile
- Yusuke IshikawaResearch Fellow ／Digital Communications OfficerYusuke Ishikawa is Research Fellow and Digital Communications Officer at the Institute of Geoeconomics (IOG). His research focuses on European compara…View Profile
