Diplomacy and Security Survey Research Project FY2023-2025
Building Response Procedures and a Multilateral Joint Posture to Deter a Taiwan Contingency

Purpose

The Maritime Security Study Group, led by Saito Takashi, former Chief of Staff, Joint Staff, Japan Self-Defense Forces (JSDF), and consisting of related parties mainly from the Japan Ministry of Defense and JSDF, has been conducting research activities continuously since 2014. The study group is working on a three-year research project "Building Response Procedures and a Multilateral Joint Posture to Deter a Taiwan Contingency" funded by the Ministry of Foreign Affairs of Japan in 2023 and conducts research meetings on a monthly basis. The members and activities of the study group in FY2025 are as follows.

Members (honorifics omitted)

Chairman: Saito Takashi, Former Chief of Staff, Joint Staff, JSDF
Study group members:

• Fukumoto Izuru, Former President, Japan Maritime Self-Defense Force Command and Staff College
• Tokuchi Hideshi, Senior Research Advisor, Nakasone Peace Institute; President, Research Institute for Peace and Security
• Hirata Hidetoshi, Former Commander, Air Training Command, Japan Air Self-Defense Force
• Matsumura Goro, Former Commanding General, Northeastern Army, Japan Ground Self-Defense Force
• Nakamura Susumu, Senior Research Fellow, SFC Research Institute, Keio University
• Sato Koichi, Professor, Oberlin University
• Murakami Masatoshi, Associate Professor, Kogakkan University
• Yamamoto Katsuya, Director of Strategy and Deterrence Program / Senior Research Fellow, The Sasakawa Peace Foundation
• Aizawa Riho, Research Fellow, The National Institute for Defense Studies
• Maximillian Takuma Yamamoto
• Kawashima Takashi, Research Fellow, The National Institute for Defense Studies
• Takabatake Futoshi, Senior Research Fellow, Nakasone Peace Institute
• Yasue Mariko, Senior Research Fellow, Nakasone Peace Institute

*The following researchers from Nakasone Peace Institute also participate as cooperating study group members.

• Komine Takao, Senior Research Counselor, Nakasone Peace Institute; Professor, Taisho University
• Nagashima Jun, Senior Research Advisor, Nakasone Peace Institute
• Hirose Yoko, Senior Fellow, Nakasone Peace Institute; Professor, Faculty of Policy Management, Keio University; Deputy Director, KGRI (Keio Global Research Institute)
• Hosoya Yuichi, Senior Fellow, Nakasone Peace Institute; Professor, Faculty of Law, Keio University
• Osumi Yo, Senior Research Fellow, Nakasone Peace Institute

Study Group Activities

1st Meeting May 29, 2025

Theme: Discussion of research for FY2025

2nd Meeting June 24, 2025

Themes: Discussion of research for FY2025,
　　　 　 Research presentation

3rd Meeting July 23, 2025

Themes: Discussion of research for FY2025,
　　　 　 Research presentation

Exchange of Views with Center for Strategic and International Studies(CSIS)

1st Session July 18, 2025

Theme: Japan's Resilience in Hybrid Warfare,
　　　　Joint Research Meeting with Research Project for Risks in the Information Sphere

Exchange of opinions with Australian Strategic Policy Institute

1st Session September 12, 2025

Themes:
(1) Hybrid warfare by China against Taiwan
(2) Multilateral joint posture to deter a Taiwan contingency

*This study is funded by a grant from the Ministry of Foreign Affairs of Japan for research and study on diplomacy and security projects adopted in FY2023.