Experts Hirohito Ogi
Senior Research Fellow
Profile
Hirohito Ogi is a senior research fellow at the Institute of Geoeconomics (IOG) studying military strategy and Japan’s defense policy. Before joining the IOG, Mr. Ogi had been a career government official at the Ministry of Defense (MOD) and Ministry of Foreign Affairs (MOFA) for 16 years. From 2021 to 2022, he served as the Principal Deputy Director for the Strategic Intelligence Analysis Office, the Defense Intelligence Division at the MOD, where he led the MOD’s defense intelligence. From 2019 to 2021, he served as a Deputy Director of the Defense Planning and Programming Division at the MOD. He holds a Master’s degree in international affairs from the School of International and Public Affairs (SIPA), Columbia University, and a Bachelor’s degree in arts and sciences from the University of Tokyo. He is the author of various publications including Comparative Study of Defense Industries: Autonomy, Priority, and Sustainability (co-authored, Institute of Geoeconomics, 2023).
Expertise
Defense and national security / Strategic studies / Defense industrial policy
Project in Charge
Publications
Books and reports
- From Decline to Surge: The Defense Industry in the Era of Excess Demand (Institute of Geoeconomics, January 2026).
- Comparative Study of Defense Industries -Autonomy, Priority, and Sustainability- (Institute of Geoeconomics, December 2024).
Journal articles
- “Japan’s Information Security and Defence Reforms: From Inner Circle to National Standardisation,” RUSI Journal 171, no. 1 (February 2026): 58-69.
- “Toward Functioning Alignment: Future Developments of Defense Cooperation between South Korea and Japan,” The Korean Journal of Defense Analysis 37, no. 2 (June 2025): 183-206 (with Kihyun Yoo and Kohtaro Ito).
- “The Origins of Japan’s Arms Export Prohibition,” Asia Policy 20 no.1 (January 2025): 135-155.
Commentaries
- “Undertaking concrete trilateral cooperation on information sharing: Opportunities and challenges from a Japanese perspective,” in Tom Corben, ed., “AJUSINT: Advancing defence information and intelligence sharing between Australia, Japan and the United States,” United States Studies Centre, The University of Sydney, September 2025.
- “Beyond a Zero-Sum Approach to U.S.-Japan Defense Burden Sharing,” Geoeconomic Briefing (August 2025).
- “Per Tōkyō L’AI Non Cambia Ancora La Guerra,” Limes (May 2025).
- “Adjusting Net Imbalances of Benefits in Complex Geopolitics: Foundational Security Cooperation between Japan and South Korea,” Korea-Japan Joint Work on World 2050 (Seoul: East Asia Institute, March 2025).
- “Beyond Policy Limits: Rethinking U.S.-Japan Command and Control,” Stimson Center Policy Memo (The Stimson Center, March 2025).
- “Navigo ergo sum. Tōkyō si prepara alla guerra nel mare,” Limes “I signori degli oceani,” November 2024.
- “Enhancing the Shield and the Spear: Understanding Recent Developments in the Japan-US Alliance,” Asia-Pacific Leadership Network, August 2024.
- “Lessons from Ukraine and Gaza on humanitarian law,” The Japan Times (September 26, 2024).
- “Japan-U.S.-South Korea Trilateral Cooperation in Response to the Russia-North Korea Partnership,” IOG Commentary, no.1 (July 4, 2024).
- “Enhancing undersea deterrence capabilities with JAUKUS collaboration“, East Asia Forum (May 11, 2024).
- “The Opportunity and Duty for Japan’s Defense Exports Amid the Demand-Pulled International Defense Economy” (Institute of Geoeconomics, March 25, 2024).
- “Remaining Challenges for Operationalizing Japan’s Information Security Legislation” (Institute of Geoeconomics, February 19, 2024).
- “How East Asia should prepare for a possible Trump comeback,” The Japan Times (January 31, 2024).
- “Evolving Japan-US command and control cooperation for forward denial” (United States Studies Centre, Sydney University, November 20, 2023).
- “How Japan can make the most of its latest diplomatic tool”, The Japan Times (August 27, 2023).
- “Russia’s nuclear blackmail must be met with denial”, The Japan Times (May 22, 2023).
- “How Can We Make the Argument on Tax Increase for Strengthening Defense Capabilities Persuasive?“, IOG Commentary (December 26, 2022).
- “The Strategic Shift from Territorial Defense to In-Depth Interdiction and the Unfinished Work of Transforming the Self-Defense Forces”, IOG Commentary (December 23, 2022).
- “In dealing with Beijing, Tokyo must adopt a strong security front”, The Japan Times (December 20, 2022).
- “Impact of the war in Ukraine sees Japan at the mercy of bigger players”, The Japan Times (November 24, 2022).
- “The Japanese Views on Legal Issues Related to Security”, Japanese Yearbook on International Law 59 (2016) (with Tomohiro Mikanagi).
Lectures and Events
Events
- “Defense as the Core of “Comprehensive Security” in the Indo-Pacific,” Joint Conference on Comprehensive Security in the Indo-Pacific (November 2025).
- “Defense Capabilities and Defense Industrial Cooperation in and across the Indo-Pacific,” 2025 Geoeconomics Summit (Institute of Geoeconomics, October 2025).
- “Future of Regional Security Partnership Architecture,” Indo-Pacific Policy Dialogue (Yokosuka Council on Asia-Pacific Studies (YCAPS), October 2025).
- “Pacific Future Forum 2025” (August 2025).
- “Japan-India Strategic Dialogue 2025” (International House of Japan/Ananta Aspen Centre, August 2025).
- “Japan’s defence revolution and Australia-Japan-US trilateralism under Trump 2.0” (The United States Studies Centre, the University of Sydney, August 2025).
- “U.S.-Japan Alliance in 2025: Toward a Deeper Alliance” (The Stimson Center, March 2025).
- “Global Security Briefing Episode 95: Japan’s Defence Industry Revival” (The Royal United Services Institute for Defence and Security Studies Podcast, February 2025).
- “Allied and Aligned? The Future of Alliances in the Indo-Pacific after the US Elections” (Institut français des relations internationales (Ifri), November 14, 2024).
- “Tutti gli oceani portano a Roma – Mar Rosso – Indo-Pacifico” (Limes, November 9, 2024).
- “Track 1.5 Japan-Germany Security Dialogue” (The Ministry of Foreign Affairs of Japan, the Japan Institute of International Affairs, the German Federal Foreign Office, the Japanese-German Center Berlin (JDZB), and Konrad-Adenauer-Stiftung (KAS), November 1, 2024).
- “Geopolitical Outlook 2025: End of Co-existence?” (World Knowledge Forum, September 10, 2024).
- “What’s After ‘Japanuary’?: A Forward-Looking Agenda for the U.S.-Japan Alliance” (National Committee on American Foreign Policy (NCAFP), March 2023).
Research
Diplomacy
What Takaichi’s Snap Election Landslide Means for Japan’s Defense and Fiscal Policy
Election Results: Key Takeaways and Implicati…
Senior Research Fellow
Hirohito Ogi
Security
Defense Capabilities and Defense Industrial Cooperation in and across the Indo-Pacific
Japan’s Defense Industrial Policy / South Kor…
Senior Research Fellow
Hirohito Ogi
Security
From Decline to Surge: The Defense Industry in the Era of Excess Demand (Executive Summary)
As Japan’s security environment deteriorates,…
Senior Research Fellow
Hirohito Ogi
Security
Beyond a Zero-Sum Approach to U.S.-Japan Defense Burden Sharing
The Trump administration’s policy of pressing…
Senior Research Fellow
Hirohito Ogi
Security
Can the Trump Administration Address the U.S. Military’s Multi-Front Resource Dispersion?
*The original article in Japanese was publish…
Senior Research Fellow
Hirohito Ogi
Experts in Geoeconomics
Experts-
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 - Akihiko SasakiProgram Coordination ManagerAkihiko Sasaki is Program Coordination Manager at the Institute of Geoeconomics (IOG). He earned his Bachelor’s degree from the Faculty of Science and…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 UmedaResearch 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 Director of Research at PTB Global Advisors, a Washington DC-based geopolitical risk consulting firm. Specializing in economic co…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
- 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
- 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
- Yusuke IshikawaResearch Fellow ／Digital Communications OfficerYusuke Ishikawa is Research Fellow and Digital Communications Officer at Asia Pacific Initiative (API) and Institute of Geoeconomics (IOG). His resear…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 Asia Pacific Initiative (API) & the Institute of Geoeconomics (IOG), the International House of Japan (I…View Profile
