Updated on 2026/04/18

写真a

 
YAMAGUCHI,Wataru
 
Organization
Faculty of Policy Studies Associate Professor
Title
Associate Professor
Profile

Wataru Yamaguchi is associate professor in the Faculty of Law at Teikyō University. He advanced to graduate school before completing his undergraduate degree and entered the Graduate School of Law, Doshisha University, where he earned both his MA and PhD in political science. He is the author of Reisen shūenki no Nichi-Bei kankei [US-Japan Relations in the Sunset of the Cold War] (Yoshikawa Kōbunkan, 2023), recipient of the Masayoshi Ohira Memorial Prize and the Inoki Masamichi Award, and Nichibei shunō kaidan [US-Japan Summits] (Chūōkōron Shinsha, 2024). His research focuses on the history of the US-Japan alliance and on Japan’s foreign and defense policy in the 1980s. He is also a recipient of the Frank Gibney Award from the Journal of American-East Asian Relations.

External link

Degree

  • Ph.D. in Political Science ( 2016.3   Doshisha University )

Research Interests

  • Security

  • U.S. Diplomatic History

  • International Relations

  • U.S. Presidential Libraries

  • U.S.-Japan Relations

  • Japanese Diplomatic History

  • Strategic Assistance

  • The History of the US-Japan Alliance

  • Comprehensive Security

  • U.S.-Japan Summits

  • History of U.S.-Japan Relations

Research Areas

  • Humanities & Social Sciences / International relations

Education

  • Doshisha University   Graduate School of Law

    2010.4 - 2014.3

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    Country: Japan

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  • Doshisha University   Graduate School of Law

    2008.4 - 2010.3

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  • Doshisha University   Faculty of Law   Department of Political Science

    2005.4 - 2008.3

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    Country: Japan

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Research History

  • Institute of Science Tokyo   Institute of Future Science   Specially Appointed Associate Professor

    2026.4

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  • Kansai University   Faculty of Policy Studies   Associate Professor

    2026.4

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  • Teikyo University   Faculty of Law Department of Political Science   Associate Professor

    2025.4 - 2026.3

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  • Teikyo University   Faculty of Law Department of Political Science   Senior Assistant Professor

    2020.4 - 2025.3

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  • Teikyo University   Faculty of Law   Assistant Professor

    2017.4 - 2020.3

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  • Doshisha University   International Institute of American Studies   Assistant Professor

    2014.4 - 2017.3

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  • Stanford University   The Freeman Spogli Institute   Visiting Researcher

    2010.9 - 2011.6

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  • Institute of Science Tokyo   Institute of Future Science   Visiting Associate Professor

    2025.10 - 2026.3

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  • Tokyo Institute of Technology   Part-time Lecturer

    2023.7 - 2024.9

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  • JMSDF Command and Staff College   Part-time Lecturer

    2022.4 - 2026.3

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    Country:Japan

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  • Gakushuin Women's College   Faculty of Intercultural Studies   Part-time Lecturer

    2022.4 - 2025.3

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    Country:Japan

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  • Chuo University   Faculty of Policy Studies   Part-time Lecturer

    2020.4 - 2021.3

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  • Tokyo University of Foreign Studies   School of International and Area Studies   Part-time Lecturer

    2019.4 - 2023.9

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  • Ryukoku University   Faculty of Law   Part-time Lecturer

    2016.4 - 2016.9

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  • Kobe Univerisity   Graduate School of Law and Faculty of Law   Part-time Lecturer

    2015.10 - 2017.3

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  • Kyoto University of Art and Design   Part-time Lecturer

    2014.10 - 2017.3

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Professional Memberships

  • Japan Society for Defense Studies

    2023 - Present

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  • European Association for Japanese Studies

    2016.6 - 2018.12

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  • The Japanese Association for American Studies

    2014 - Present

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  • The Japan Association for International Security

    2008 - Present

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  • The Japan Association of International Relations

    2008 - Present

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Committee Memberships

  • Research Institute for Peace and Security   RIPS Research Committee Member  

    2025.4 - Present   

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    Committee type:Other

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  • Japan Association for International Security   Planning and Management Committee Member  

    2024.1 - Present   

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    Committee type:Academic society

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  • Japan Association for International Security   Program Committee Member  

    2024.1 - Present   

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    Committee type:Academic society

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  • Japan Association for International Security   Auditor  

    2024.1 - Present   

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    Committee type:Academic society

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  • The Japan Institute of International Affairs   Member  

    2023.4 - Present   

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  • Research Institute for Indo-Pacific Affairs (RIIPA)   Regular Member  

    2019.4 - Present   

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    Committee type:Other

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  • Center for Interdisciplinary Study of Monotheistic Religions, Doshisha University   CISMOR Research Fellow  

    2016.7 - Present   

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  • Research Center for Advanced Science and Technology Open Laboratory for Emergence Strategies, the University of Tokyo   Chairperson, "International Politics and Leadership"  

    2024.4 - 2026.3   

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  • Research Center for Advanced Science and Technology Open Laboratory for Emergence Strategies, the University of Tokyo   Committee Member, “The Crisis and Restructuring of Liberal Democracy”  

    2024.4 - 2026.3   

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  • Japan Association for International Security   Member of General Affairs Committee  

    2015.4 - 2023.12   

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    Committee type:Academic society

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Papers

  • The U.S.-Japan Alliance during the Second Shinzo Abe Administration: Perspectives on “Equality” and “Symmetry”

    Wataru Yamaguchi

    Defense Studies   ( 74 )   17 - 34   2026.3

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    Publishing type:Research paper (scientific journal)  

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  • Factors in Replacing the Three Principles on Arms Exports

    YAMAGUCHI Wataru

    Defense Studies   ( 60 )   77 - 95   2019.3

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

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  • "Acceptance of Comprehensive Security" Reviewed

    YAMAGUCHI Wataru

    International Relations   ( 188 )   46 - 61   2017.3

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

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  • "Change and Continuity in U.S.-Japan Security Relations at the Beginning of the Second Cold War"

    YAMAGUCHI Wataru

    Doshisha University   2016.3

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    Language:Japanese   Publishing type:Doctoral thesis  

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  • "Japanese Assistance to Countries Bordering Conflicts at the Beginning of the Second Cold War" Reviewed

    Wataru Yamaguchi

    <i>The Journal of International Security<i>   42 ( 2 )   69 - 85   2014.9

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

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  • "U.S. Foreign Policy toward Japan from the Carter Administration to the Reagan Administration"

    Wataru Yamaguchi

    An Occasional Supplement to Doshisha American Studies   ( 19 )   35 - 54   2013.3

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    Language:Japanese   Publishing type:Research paper (bulletin of university, research institution)  

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  • "Expansion of the U.S.-Japan Alliance in the Yasuhiro Nakasone Administration: Japanese Cooperation with the U.S. in the Persian Gulf"

    Wataru Yamaguchi

    <i>The Doshisha Hogaku (The Doshisha Law Review)<i>   64 ( 357 )   229 - 275   2012.9

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    Language:Japanese   Publishing type:Research paper (bulletin of university, research institution)   Publisher:Alternative:The Doshisha Law Association  

    DOI: 10.14988/pa.2017.0000014083

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  • The Ministry of Foreign Affairs and the Shift in Japanese Diplomacy at the Beginning of the Second Cold War, 1979: A New Look Reviewed

    Yamaguchi Wataru

    The Journal of American-East Asian Relations   19 ( 3-4 )   311 - 338   2012

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Brill  

    Previous studies have proposed two different views as to how the beginning of the Second Cold War shaped Japanese diplomacy. This study demonstrates and reinterprets transformations in Japanese diplomacy experienced at that time, examining in particular the perceptions and behaviors of the Ministry of Foreign Affairs of Japan, based on primary source materials of both Japan and the United States. Japanese diplomacy was slowly transformed as the international environment became harsher. Indeed, the Soviet invasion of Afghanistan made the ministry aware of the Soviet threat, and Japan consequently started to increase its defense spending and make use of strategic foreign aid: these transformations might not have been radical, but were enough to cause the United States to perceive Japan more positively on security issues. However, the ministry’s attitude had been changing even before the beginning of the Second Cold War, inspired by jurisdictional disputes in the context of the diversification of security and the public approval of defense policies. The changes enabled the U.S.-Japan alliance to evolve into a much more complex partnership in the 1980s.

    DOI: 10.1163/18765610-01904009

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    Other Link: https://data.brill.com/files/journals/18765610_019_03-04_S06_text.pdf

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Books

  • Examining Heisei Japan, Vol. IV: Society and Culture

    Supervised by Kitaoka Shinichi, edited by Tsutsui Kiyotada, Nakatani Tadashi, and Yamaguchi Wataru( Role: Joint editor)

    Japan Publishing Industry Foundation for Culture  2026.3  ( ISBN:4866582707

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    Total pages:224   Language:English  

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  • The History of the US-Japan Alliance

    Edited by Wataru Yamaguchi( Role: Edit)

    Horitsu Bunka Sha  2025.12  ( ISBN:458904451X

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    Total pages:292   Responsible for pages:ⅰ, ⅱ, 1-7, 121-175  

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  • US-Japan Summits

    Wataru Yamaguchi( Role: Sole author)

    Chuokoron-Shinsha  2024.12  ( ISBN:4121028341

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    Total pages:384  

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  • Japan's Contemporary Diplomacy: Issues and Debates

    Shiro Sato, Shinji Kawana, Tomoya Kamino, Kousuke Saito, Wataru Yamaguchi( Role: Joint editor"US-Japan Alliance" "Official Development Assistance")

    Horitsu Bunka Sha  2024.4  ( ISBN:4589043335

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    Total pages:288   Responsible for pages:1-4, 6-15, 163-172, 270-271  

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  • Presidential Libraries and Museums

    Shingo Tanaka, Keikichi Takahashi, Wataru Yamaguchi( Role: Joint author“Ever-Evolving Presidential Library” “Ronald Reagan Presidential Library” “George H. W. Bush Presidential Library” “William J. Clinton Presidential Library” “George W. Bush Presidential Library” “Barack Obama Presidential Library” “Donald J. Trump Presidential Library”)

    Osaka University Press  2024.3  ( ISBN:4872597869

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    Total pages:272   Responsible for pages:66-93, 204-233  

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  • Introduction to Japanese Diplomacy

    Yoshitaka Katayama, Wataru Yamaguchi( Role: Joint editor)

    Yoshikawa Kobunkan  2024.3  ( ISBN:4642084460

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    Total pages:248   Responsible for pages:126-127,151,158-161,195,216-222  

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  • US-Japan Relations in the Sunset of the Cold War

    Wataru Yamaguchi( Role: Sole author)

    Yoshikawa Kobunkan  2023.1  ( ISBN:4642039228

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    Total pages:390   Language:Japanese   Book type:Scholarly book

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  • The Craft of International History: A Guide to Method

    Koji Murata, Tadashi Nakatani, Wataru Yamaguchi( Role: Joint translator ,  Original_author: Marc Trachtenberg)

    Minerva Shobo  2022.12  ( ISBN:4623093727

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    Total pages:336   Language:Japanese  

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  • Asian Security 2025-2026

    Research Institute for Peace and Security ed.( Role: Contributor"The Trump Administration and U.S.-Japan Relations")

    Asagumo Shinbunsha  2025.10  ( ISBN:475094047X

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    Total pages:260   Responsible for pages:17-25  

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  • The Belt and Road Initiative and the International Order

    Ryo Asano ed.( Role: Contributor)

    Horitsu Bunka Sha  2025.7  ( ISBN:4589044188

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    Total pages:360   Responsible for pages:94-118   Language:Japanese   Book type:Scholarly book

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  • A Book Guide to International Security

    Kanji Akagi, Japan Association for International Security( Role: Contributor"Comprehensive National Security Strategy")

    Keio University Press  2024.2  ( ISBN:4766429338

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    Total pages:288   Responsible for pages:258-259  

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  • "Young People These Days"

    Masahiro Yamada ed( Role: Contributor)

    PHP Institute  2023.11  ( ISBN:4569856071

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    Total pages:248   Responsible for pages:66-77   Language:Japanese  

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  • Basic Knowledge of International Politics

    Hirotaka Watanabe, ed( Role: Contributor"Economic Security," "US-Japan Alliance," "History of US-Japan Relations")

    Ashi Shobo  2023.5  ( ISBN:4755613264

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    Total pages:362   Responsible for pages:98-100, 109-111, 155-164   Language:Japanese   Book type:Textbook, survey, introduction

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  • US-Japan Relations

    Keiichi Hatakeyama, ed( Role: Contributor"US-Japan Relations in the 1980s")

    Minerva Shobo  2022.4  ( ISBN:4623093573

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    Total pages:458   Responsible for pages:255-271   Language:Japanese  

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  • Introduction to Political Science

    Haruya Sakamoto, Shoichiro Ishibashi, ed( Role: Contributor"International Politics")

    Horitsu Bunka Sha  2020.9  ( ISBN:4589041006

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    Total pages:240   Responsible for pages:17-32   Language:Japanese  

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  • Lectures on Showa Japan

    Kiyotada Tsutsui, ed( Role: Contributor"Ron-Yasu Relationship")

    Chikuma Shobo  2020.8  ( ISBN:4480073418

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    Total pages:381   Responsible for pages:313-328   Language:Japanese  

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  • A Phase Angle: Conceptual Approach to Security Debates in Japan

    Shinji Kawana, Shiro Sato, ed( Role: Contributor"Debates over the Development Cooperation Charter")

    Horitsu Bunka Sha  2018.12  ( ISBN:4589039788

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    Total pages:224   Responsible for pages:150-167   Language:Japanese   Book type:Scholarly book

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  • Japan's Contemporary Diplomacy: Issues and Debates

    Shiro Sato, Shinji Kawana, Tomoya Kamino, Kosuke Saito, ed( Role: ContributorU.S.-Japan Alliance; ODA)

    Horitsu Bunka Sha  2018.4  ( ISBN:4589039036

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    Total pages:310   Responsible for pages:6-15, 169-178   Language:Japanese   Book type:Textbook, survey, introduction

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MISC

  • Interview

    Yasuo Fukuda, Wataru Yamaguchi, Yuki Kominami

    Diplomacy   ( 85 )   134 - 143   2024.5

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    Publishing type:Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)  

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  • "Grand Narratives and Small-Scale Eschatologies" Invited

    Wataru Yamaguchi

    AΣTEION   ( 100 )   160 - 164   2024.5

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)  

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  • Interview with Shotaro Yachi

    Shotaro Yachi, Wataru Yamaguchi

    Diplomacy   ( 83 )   134 - 141   2024.1

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  • Interview with Shotaro Yachi

    Shotaro Yachi, Wataru Yamaguchi

    Diploamacy   ( 82 )   130 - 139   2023.11

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  • Top Secret Diplomatic Documents Invited

    Wataru Yamaguchi

    Diplomacy   ( 79 )   146 - 149   2023.6

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)  

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  • "Japan in the Lost Three Decades" Invited

    Wataru Yamaguchi

    Diplomacy   ( 78 )   142 - 149   2023.3

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)  

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  • Top Secret Diplomatic Documents Invited

    Wataru Yamaguchi

    Diplomacy   ( 77 )   146 - 149   2023.1

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)  

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  • "Top Secret Diplomatic Documents" Invited

    Wataru YAMAGUCHI

    Diplomacy   ( 76 )   136 - 139   2022.11

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)  

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  • "Top Secret Diplomatic Documents" Invited

    Wataru YAMAGUCHI

    Diplomacy   ( 75 )   134 - 137   2022.9

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)  

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  • "Opinion on a 'Free and Open' Order" Invited

    Wataru Yamaguchi

    Voice   ( 533 )   53 - 59   2022.4

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)  

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  • A Consensus on Security Policy Invited

    Wataru Yamaguchi

    SYNODOS   2020.5

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)  

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  • Book Review, America Under Trump Invited

    Wataru Yamaguchi

    Komei Shimbun   2025.11

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    Publishing type:Book review, literature introduction, etc.  

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  • Book Review, What Is Diplomacy? Invited

    Wataru Yamaguchi

    Komei Shimbun   2025.7

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  • On US-Japan Relations in the Sunset of the Cold War Invited

    Wataru Yamaguchi

    The Journal of Peace and Security   ( 11 )   4 - 11   2025.6

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  • "Considering Challenges in Japanese Diplomacy" Invited

    Yoshitaka Katayama, Yukiko Toyoda, Wataru Yamaguchi

    Hongo   ( 171 )   2 - 11   2024.5

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  • "Book Review on The Geopolitics of the Japan-U.S. Alliance" Invited

    Wataru Yamaguchi

    Nami   58 ( 5 )   84 - 85   2024.5

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  • "Acceptance Speech" Invited

    Wataru Yamaguchi

    Peace and Security   ( 10 )   71 - 71   2024.3

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  • "Japan Defense Agency Materials" Invited

    Wataru Yamaguchi

    2023.10

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    Publisher:Maruzen Yushodo Co., Ltd.  

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  • Book Review, The Diplomatic Endeavor of Japanese Three Prime Ministers in the Sunset of Cold War: 1980-1989 Invited

    Wataru Yamaguchi

    International Relations   ( 202 )   105 - 108   2021.3

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    Language:Japanese   Publishing type:Book review, literature introduction, etc.  

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  • "Five Books to Know the President of the United States" Invited

    Wataru Yamaguchi

    Diplomacy   ( 66 )   142 - 143   2021.3

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    Language:Japanese   Publishing type:Book review, literature introduction, etc.  

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  • Book Review, Sho Masaki, The Untold Link Between the Bonin and Ryukyu Reversions Invited

    YAMAGUCHI Wataru

    The American Studies Newsletter   ( 195 )   4   2017.12

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    Language:Japanese   Publishing type:Book review, literature introduction, etc.  

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  • Book Review, Takao Segawa, U.S.-Soviet Nuclear Disarmament Negotiations and Japan's Diplomacy, 1981-1987 Invited

    YAMAGUCHI Wataru

    Journal of Japanese History   ( 652 )   63 - 67   2016.12

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    Language:Japanese   Publishing type:Book review, literature introduction, etc.  

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  • Interview, "Ambassador Seiji Kojima Interview"

    Wataru Yamaguchi, Tadashi Nakatani, Ryoko Abe, Masahiko Nishimura eds

    Doshisha American Studies   ( 52 )   57 - 78   2016.3

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    Language:Japanese   Publisher:Alternative:International Institute of American Studies, Doshisha University  

    DOI: 10.14988/pa.2017.0000015371

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  • Book Review, Yoshihide Soeya, David A. Welch, and Masayaki Tadokoro eds., 'Futsu' no Kuni Nihon (Japan as a 'Normal Country'?) Invited

    YAMAGUCHI Wataru

    The Journal of International Security   42 ( 4 )   85 - 89   2015.3

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    Language:Japanese   Publishing type:Book review, literature introduction, etc.  

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  • Translation, John L. Esposito, "The role and future of religion in global politics" Invited

    Wataru YAMAGUCHI

    Neesima Koza   ( 34 )   18 - 32   2012.3

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    Language:Japanese  

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Presentations

  • "Political Leaders in International Politics" Invited

    Wataru Yamaguchi

    JAIR Annual Convention 2025  2025.10 

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    Event date: 2025.10

    Venue:Kobe International Conference Center  

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  • "Typology of Comprehensive Security" Invited

    Wataru Yamaguchi

    Japan Association for International Security  2023.12 

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    Event date: 2023.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Keio University  

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  • “'Free and Open Indo-Pacific' in the History of Value Diplomacy”

    Wataru Yamaguchi

    Decision-Making Sectional Meeting, JAIR Annual Convention 2023  2023.11 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Changing World Order and the “Belt and Road Initiative”: A History of “Free and Open Indo-Pacific”

    Wataru YAMAGUCHI

    JAAS (Japan Association for Asian Studies) Autumn Convention 2021  2021.11 

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    Language:Japanese   Presentation type:Oral presentation (general)  

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  • "Three Principles on Arms Exports and Their Related Policy Guidelines and Norms"

    YAMAGUCHI Wataru

    The Japan Association of International Relations  2016.10 

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    Language:Japanese   Presentation type:Oral presentation (general)  

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  • "The Formation and Development of Ronald Reagan Administration’s Foreign Policy to Japan" International conference

    YAMAGUCHI Wataru

    EAJS (European Association of Japanese Studies) Conference in Japan  2016.9 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Kobe University  

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  • "The ‘Pacific Basin Cooperation Concept’ and U.S.-Japan Relations" International conference

    YAMAGUCHI Wataru

    Asian Studies on the Pacific Coast Conference (ASPAC)  2015.6 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:University of the Pacific   Country:United States  

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  • 「総合安全保障の受容」

    山口 航

    日本国際政治学会  2014.11  福岡国際会議場

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    Language:Japanese   Presentation type:Oral presentation (general)  

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  • "The Shift in U.S.-Japan Cooperation at the Beginning of the Second Cold War" International conference

    YAMAGUCHI Wataru

    The Society for Historians of American Foreign Relations (SHAFR)  2014.6 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Hyatt Regency Lexington & Lexington Convention Center   Country:United States  

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  • 「新冷戦初期における紛争周辺国への戦略援助」

    山口 航

    国際安全保障学会  2013.12 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:関西学院大学西宮上ヶ原キャンパス  

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  • 「新冷戦初期における日本の外交・安全保障政策の変容」

    山口 航

    国際安全保障学会 第2回定例研究会  2011.10 

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    Language:Japanese   Presentation type:Oral presentation (general)  

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  • 「書評会『日米同盟史』(法律文化社、2025年)」 Invited

    山口航

    第14回基地政治研究会  2026.3 

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    Presentation type:Oral presentation (general)  

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  • "Gulf War and the US-Japan Alliance"

    Wataru Yamaguchi

    2025.11  The Japan Institute of International Affairs

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  • Review Session on Japan’s PKO Policy and the US-Japan Summits

    Wataru Yamaguchi

    2025.11 

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  • 「なぜ首脳会談は外交史研究の主題となりにくいのか」

    山口航

    東京大学先端研・創発戦略研究オープンラボ(ROLES)「国際政治とリーダーシップ」  2025.7 

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    Presentation type:Oral presentation (general)  

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  • 「書評会『日米首脳会談――政治指導者たちと同盟の70年』(中公新書、2024年)」 Invited

    山口航

    第10回基地政治研究会  2025.2 

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  • 「西側同盟から見た冷戦終焉――日本」 Invited

    山口航

    「歴史としての冷戦終焉 ―ポスト冷戦の視座から―」  2024.11  公益財団法人 日本国際問題研究所

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    Presentation type:Symposium, workshop panel (nominated)  

    Venue:TKPガーデンシティ博多   Country:Japan  

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  • US-Japan Summits

    Wataru Yamaguchi

    ROLES  2024.9 

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    Presentation type:Oral presentation (general)  

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  • "US-Japan Relations in Light of the Upcoming Presidential Election" Invited

    Wataru Yamaguchi

    Center for American Studies, Nanzan University  2024.5 

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    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

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  • On the 9th JSDS Inoki Masamichi Award-winning Book Invited

    Wataru Yamaguchi

    2024.3 

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  • "The Craft of International History" Invited

    Wataru Yamaguchi

    2024.1 

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    Language:Japanese   Presentation type:Oral presentation (general)  

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  • "U.S.-Japan Alliance" Invited

    Wataru Yamaguchi

    Kansai Security Seminar  2023.11  The Research Institute for Peace and Security (RIPS)

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    Language:Japanese   Presentation type:Symposium, workshop panel (nominated)  

    Venue:Doshisha University   Country:Japan  

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  • "Changing Presidential Libraries" Invited

    Wataru Yamaguchi

    "Disruption and Reformation of Liberal Democracy" Working Group, RCAST Open Laboratory for Emergence Strategies  2023.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:zoom  

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  • Review Session on US-Japan Relations in the Sunset of the Cold War and Japan's East Asian Diplomacy during the "Second Cold War" and the Detente That Followed The Policies of the Ohira, Suzuki, and Nakasone Cabinets

    Wataru Yamaguchi

    International History Society  2023.9 

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    Language:Japanese  

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  • "US-Japan Relations in the Sunset of the Cold War: Comprehensive Security" Invited

    Wataru Yamaguchi

    2023.8  The Japan Institute of International Affairs

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

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  • "US-Japan Relations in the Sunset of the Cold War: Comprehensive Security" Invited

    Wataru Yamaguchi

    2023.7 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Hosei University   Country:Japan  

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  • "US-Japan Security Arrangements" Invited

    Okinawa Fellowship  2023.6  Research Institute for Peace and Security

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    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Country:Japan  

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  • "Comprehensive Security focusing on Ohira, Suzuki and Nakasone" Invited

    Wataru Yamaguchi

    2023.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:International Research Center for Japanese Studies   Country:Japan  

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  • A History of “Free and Open Indo-Pacific”

    Wataru Yamaguchi

    2021.9 

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    Language:Japanese  

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  • 「都市外交研究の現況」

    山口 航

    科学研究費補助金(基盤研究(C))「都市は外交する」研究会  2019.5 

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    Language:Japanese   Presentation type:Oral presentation (general)  

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  • "Foreign Aid from the Viewpoint of Security"

    YAMAGUCHI Wataru

    Kansai Asia Pacific Security Fourum  2017.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

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  • 「1980年代における日本の安全保障政策と日米関係――近年の研究動向を踏まえて」 Invited

    山口 航

    安全保障政策史研究会  2015.3 

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    Language:Japanese   Presentation type:Oral presentation (invited, special)  

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Awards

  • The Okinaga Shoichi Award

    2024.3   Teikyo University  

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  • The 40th Masayoshi Ohira Memorial Prize

    2024.2   Masayoshi Ohira Foundation   US-Japan Relations in the Sunset of the Cold War

    Wataru Yamaguchi

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  • The Inoki Masamichi Award

    2023.10   Japan Society for Defense Studies   US-Japan Relations in the Sunset of the Cold War: Comprehensive Security

    Wataru Yamaguchi

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

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  • The Best Paper Award for Early-Career Researchers

    2015.12   Japan Association for International Security  

    Wataru Yamaguchi

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  • The Frank Gibney Award

    2012.12   <i>The Journal of American–East Asian Relations</i>  

    Wataru Yamaguchi

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Research Projects

  • Realities and Consequences of Polarization in the United States

    Grant number:25K03363  2025.4 - 2029.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Grant amount:\18980000 ( Direct Cost: \14600000 、 Indirect Cost:\4380000 )

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  • 湾岸危機・戦争をめぐる日米の認識の齟齬

    Grant number:25K04985  2025.4 - 2028.3

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    山口航

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    Authorship:Principal investigator 

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  • 日米関係における総合安全保障の役割――カーター・レーガン政権期の変容

    Grant number:20K13434  2020.4 - 2025.3

    日本学術振興会  科学研究費助成事業  若手研究

    山口 航

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    Grant amount:\4160000 ( Direct Cost: \3200000 、 Indirect Cost:\960000 )

    日米安全保障関係における総合安全保障の役割に関して、米国カーター政権では政権内の意見が割れた。続くレーガン政権は当初懐疑的であったにもかかわらず、最終的には、総合安全保障の枠組みを受容することとなった。そこで、本研究は「日米安全保障関係における総合安全保障の役割に関して、なぜ米国政府の立場が変化したのか」との問いに答えていく。本研究の目的は、安全保障関係における日米の認識の相違点やプロセスなどを解明することによって、狭義の安全保障面や日本側の視点に依拠した先行研究の視点を相対化し、冷戦終焉期における日米安全保障関係像を重層的に提示することである。

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  • The Role of U.S. Ambassador to Japan Mansfield in the Policy Making Process

    Grant number:17K18233  2017.4 - 2023.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (B)

    Yamaguchi Wataru

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    Grant amount:\4030000 ( Direct Cost: \3100000 、 Indirect Cost:\930000 )

    This study is to empirically clarify the mechanism and causal relationship in the U.S. policy-making process from the perspective of the role of the U.S. Ambassador to Japan Mike Mansfield. By doing so, this research sought to elucidate the role of the U.S. Ambassador to Japan in the policy-making process and the reality of the U.S.-Japan security relationship, and to present a multilayered picture of U.S.-Japan relations at the end of the Cold War. Adopting an empirical and diplomatic-historical approach based on the analysis of declassified documents of the U.S. and Japanese governments, this study aimed to uncover new materials and present new facts and interpretations.

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  • 新冷戦期の日米安全保障関係の変容――狭義の安全保障面の機能的深化と広義の安全保障面への分野的拡大

    2014.10 - 2015.9

    公益財団法人 松下幸之助記念財団  研究助成(人文科学・社会科学領域) 

    山口 航

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\500000

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  • Japan-U.S. Partnership Program (Class 17)

    2014.7 - 2016.7

    Research Institute for Peace and Security 

    YAMAGUCHI Wataru

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\600000

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  • 日米安全保障関係

    2012.3 - 2012.10

    一般社団法人 日米協会  米国研究助成プログラム 

    山口 航

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\250000

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  • 「一帯一路」の再検討―国際関係と「一帯一路」のフィードバックに着目して―

    Grant number:23K20142  2020.4 - 2025.3

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    浅野 亮, 村田 晃嗣, 張 雪斌, 中谷 直司, 佐藤 考一, 山口 航, 松本 明日香, 黒杭 良美

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    Grant amount:\16250000 ( Direct Cost: \12500000 、 Indirect Cost:\3750000 )

    2022年度および2023年度には、「一帯一路」の再検討という目的のもと、各年度に1度ずつ研究メンバーによる発表を中心にセミナーを開き、外部からの討論者を招いて意見を聴取した。また、このセミナーとともに、技術や安全保障など、目的達成には不可欠だが研究メンバーだけではカバーしきれない分野では、複数の外部講師を招いて研究会を開いた。これらの研究をまとめて社会に還元するため、外部講師のうち4名にも執筆を依頼し、最終年度内の2024年6月を締切として書籍を刊行することとなった。
    開催したセミナーと研究会は以下のとおりである(研究メンバーの所属は省略)。
    2022年度 7月2日 岑智偉(京都産業大学)「『世界的経済循環論』から読み解く『一帯一路』」。10月22日 黒杭良美「『一帯一路』についての考察。11月12日 松尾昌宏(桜美林大学)「中欧間鉄道輸送は、競争力を維持しうるのか」。2023年1月21日 手塚沙織(南山大学)「米中対立下の高度人材の国際移動」。2月18日 BIR科研セミナー「国際秩序と米中関係」(中谷直司「国際秩序の平和的変更の困難と倫理性:歴史的視座」、松本明日香「米中間選挙と結果と国際秩序形成」、張雪斌「一帯一路構想における文化交流」)。
    2023年度 5月20日 鈴木昭吾(外交学院(北京))「一帯一路」と留学生の受け入れ政策。7月29日 下平拓哉(事業構想大学院大学)「中国の海外軍事基地」。10月14日 Reinhard Drifte (Emeritus Professor, New Castle University, UK), "China’s Yi Dai Yi Lu: European Perspectives."

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  • City Diplomacy: "Diplomacy from Cities" and "Diplomacy to Cities"

    Grant number:17K03604  2017.4 - 2022.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    Murata Koji

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    Grant amount:\4160000 ( Direct Cost: \3200000 、 Indirect Cost:\960000 )

    The present research project analyzed the roles of U.S. and Japanese cities and provincial governments in U.S.-Japan relations after the Second World War from the viewpoint of diplomacy. Furthermore, it discussed ways of how to strengthen those relationships in the future. As a result, the present research project revealed that in the past disagreements between the two countries on the level of cities and provincial governments resulted from the interests each country was pursuing in international politics at the time as well as their different interpretation of decentralization policy.

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  • The Fusion of Diplomatic History and Rational Choice Theories: What were the "Causes" of the Pacific War?

    Grant number:16K13346  2016.4 - 2020.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    NAKATANI Tadashi

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    Grant amount:\3250000 ( Direct Cost: \2500000 、 Indirect Cost:\750000 )

    What were the causes of the deepening of Japan's isolation in the 1930s, leading to the Pacific War? Speaking of long-term origins, Japan had two frameworks for international cooperation; one was new and the other was old. Both became disabled due to the Manchurian Incident. Japan could not save the situation as it had promised to the League of Nations, losing the new framework. The country also failed to make an effective response to British efforts to keep Japan in the League at the sacrifice of China. Old-fashioned great power diplomacy did not work either.
    <BR>
    This eventually brought Japan to a pact with Germany in 1940. While hoping the alliance would strengthen their position, the Japanese knew the risk of the coalition, because a pact with Germany should be a sever challenge to the US. The risk became apparent, and the Japanese realized that abandoning the treaty was a necessary condition to avoid a US-Japan war, but they failed due to the uncertainty of America's possible reaction.

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Teaching Experience

  • Introduction to International Relations

    2026.4 - Present Institution:Kansai University

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  • Specialized Introduction Seminar

    2026.4 - Present Institution:Kansai University

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  • Thesis Research

    2026.4 - Present Institution:Kansai University

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  • Foreign Policy

    2026.4 - Present Institution:Kansai University

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  • Advanced Seminar

    2026.4 - Present Institution:Kansai University

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  • Security Studies

    2026.4 - Present Institution:Kansai University

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  • Foundations of International Asian Studies

    2026.4 - Present Institution:Kansai University

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  • Research in Security Studies

    2026.4 - Present Institution:Kansai University

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  • Japanese Diplomacy

    2026.4 - 2026.9 Institution:Doshisha University

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  • International Relations

    2023.8 - 2024.9 Institution:Tokyo Institute of Technology

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  • Basic Seminar

    2023.4 - 2026.3 Institution:Faculty of Law, Teikyo University

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  • International Politics (International Strategy)

    2022.10 - 2025.3 Institution:Gakushuin Women's College

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  • International Politics (Structural Change)

    2022.4 - 2024.9 Institution:Gakushuin Women's College

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  • History of Diplomacy

    2020.10 - 2021.3 Institution:Faculty of Policy Studies, Chuo University

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  • Political Science

    2020.4 - 2026.3 Institution:Faculty of Law, Teikyo University

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  • Seminar

    2020.4 - 2026.3 Institution:Faculty of Law, Teikyo University

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  • The Making of Foreign Policy

    2020.4 - 2020.9 Institution:Faculty of Policy Studies, Chuo University

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  • Fundamentals of International Politics

    2019.10 - 2023.3 Institution:Tokyo University of Foreign Studies, School of International and Area Studies

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  • Security

    2019.4 - 2026.3 Institution:Teikyo University, Faculty of Law

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  • International Politics

    2019.4 - 2023.9 Institution:Tokyo University of Foreign Studies, School of International and Area Studies

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  • Current Political Theory

    2019.4 - 2020.3 Institution:Teikyo University, Faculty of Law

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  • Japanese Politics

    2018.4 - 2026.3 Institution:Teikyo University, Faculty of Law

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  • Diplomatic History

    2017.4 - 2024.3 Institution:Teikyo University, Faculty of Law

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  • Contemporary Politics

    2017.4 - 2024.3 Institution:Teikyo University, Faculty of Law

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  • Crisis Management

    2017.4 - 2023.3 Institution:Teikyo University

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  • Seminar

    2017.4 - 2021.3 Institution:Teikyo University, Faculty of Law

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  • Politics : Special Topics

    2017.4 - 2020.3 Institution:Teikyo University, Faculty of Law

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  • Current Affairs

    2017.4 - 2019.3 Institution:Teikyo University

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  • US-Japan Relations after World War II

    2016.4 - 2016.9 Institution:Faculty of Law, Doshisha University

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  • American Politics

    2016.4 - 2016.9 Institution:Ryukoku University, Faculty of Law

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  • Special Course on International Affairs

    2015.10 - 2017.3 Institution:Kobe University, Graduate School of Law

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  • American Law and Politics

    2015.4 - 2015.9 Institution:Faculty of Law, Doshisha University

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  • Political Science

    2014.10 - 2017.3 Institution:Kyoto University of Art and Design

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Social Activities

  • 「『日米同盟史』(法律文化社)刊行記念トークイベント」

    Role(s): Lecturer

    Books&Cafeドレッドノート/株式会社鈴木商会  2026.4

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    Type:Lecture

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  • 「トランプでどうなる、日米同盟」

    Role(s): Lecturer

    公益財団法人日本生産性本部  第77期経済情勢懇話会  パレスホテル東京  2026.3

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    Type:Lecture

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  • 梶原麻衣子『安倍晋三 ドナルド・トランプ交友録 How to DEAL with Trump』星海社新書、2025年

    Role(s): Media coverage

    2025.12

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  • 「変容し続ける大統領図書館――近年の動向と日本」

    Role(s): Panelist

    大阪大学出版会  大統領図書館からアメリカを考える  紀伊國屋書店新宿本店アカデミック・ラウンジ  2024.12

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    Type:Lecture

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  • SYNODOS

    Role(s): Editer

    2024.4 - Present

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    Type:Internet

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  • 「日米安全保障関係と『対等性』」

    Role(s): Lecturer

    中央大学総合政策学部  日米関係論  2018.11

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Media Coverage

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Academic Activities

  • “The History of the US-Japan: ‘Equality’ and ‘Symmetry’”

    Role(s): Planning, management, etc.

    Japan Association for International Security  ( Nagoya University ) 2025.12

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  • 「安全保障をめぐる世論・言説」部会 責任者

    Role(s): Planning, management, etc.

    国際安全保障学会 2024年度年次大会  ( 同志社大学新町キャンパス ) 2024.12

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  • 討論「日米両国における現代的政策過程の検討」

    日本国際政治学会2019年度研究大会  2019.10

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  • 2018年度研究大会実行委員 International contribution

    Role(s): Planning, management, etc.

    日本国際政治学会  ( 大宮ソニックシティ ) 2018.11

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  • 論文査読

    Role(s): Peer review

    『法社会学』  2025

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    Type:Peer review 

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  • 討論「イラン・イラク紛争における日本の仲介外交」

    慶應日本政治外交史研究会  2024.11

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  • Discussant "US Military Bases"

    Base Politics  2024.3

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  • Peer review

    Role(s): Peer review

    International Relations  2024

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    Type:Peer review 

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  • Peer Review

    Role(s): Peer review

    International Relations  2024

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    Type:Peer review 

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  • Peer review

    Role(s): Peer review

    International Security  2023

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    Type:Peer review 

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  • 討論「佐藤総理アジア・太平洋諸国歴訪と訪米――1967年9月-11月」

    同志社大学アメリカ研究所第6部門研究  2022.9

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  • 討論「ニクソン政権からフォード政権にかけての対日政策の変容――対日観およびグランド・ストラテジーへの日本の位置づけに着目して」

    同志社大学アメリカ研究所第6部門研究  2022.3

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  • 討論「英米関係から見た国際秩序 — — マーガレット・サッチャー政権期を中心に」

    同志社大学アメリカ研究所第6部門研究  2021.10

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  • Peer review

    Role(s): Peer review

    Doshisha American Studies  2020

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    Type:Peer review 

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  • コメンテータ「合評会武田悠『日本の原子力外交――資源小国70年の苦闘』中央公論新社、2018年」

    冷戦研究会第47回例会  2018.11

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