Education

• 1989

  BA, Kagoshima University

• 1991

  MA in Economics, Yamaguchi University

• 2000

  LL.M., Kansai University

• 2013

  Ph. D. in International Criminal Law, Yokohama National University

Publications

Books and Monographs

• "The Difference between the ‘Use of Force’ as Maritime Law Enforcement (MLE) and the ‘Use of (Armed) Force’ under Inter National Law, Conditions under Which the ‘Use of Force’ by Maritime Police (Law Enforcement) Agencies Violates the Principle of Prohibition on the Use of (Armed) Force"

  Security and Strategy, Vol. 6 No. 2 (March 2026) *Japanese

• "Disinformation and the Law of Armed Conflict"

  Security and Strategy, Vol.5, No. 1 (December 2024) *Japanese

• "Special Provisions on Punishment in the Rome Statute of the International Criminal Court: Provisions concerning Superior Orders and Responsibility of Superiors"

  Defense Law Studies, No. 48 (October 2024) *Japanese

• "Required Account for Use and Development of Naval Mines"

  Security and Strategy, Vol.1, No.1 (August 2020) *Japanese

• "Military Activities in Exclusive Economic Zone: Restriction of Coastal States, and Implications of the Legal Meaning and Concepts of 'Due Regard' on Third States"

  Journal of Japan Society of Ocean Policy, No.9(November 2019) *Japanese

• An analysis of Superior responsibility under Article 28 of the Rome Statute of the International Criminal Court

  (Naigai-Shuppan, Inc., 2014) *Japanese

Other Publications

• "The Significance and Features of the Joint Statement on the Strait of Hormuz from the Standpoint of International (Maritime) Law"

  NIDS Commentary (No. 427, April 2026) *Japanese

• "North Korea’s Involvement in the Ukraine-Russia Conflict: The Assessment in the light of International Law concerning Support for Russia by the Deployment of Troops etc."

  Asagumo (February 27th, 2025) *Japanese

• "Assesment of China’s claims in the Light of International Law: On the Cases of the Violation of the Air Space and the Entry into the Territorial Sea of Japan",

  NIDS Commentary (No.355, October 2024) *Japanese

• "The challenge to Japan’s maritime strategy in Indo-Pacific: efforts necessary to ensure the stable use of sea lanes,"

  Études Marines, Centre d’études stratégiques de la Marine, No25 - Décembre 2023.

• "Russia’s Agression of Ukrine and International Court – Problems concerning the case to ICJ and the isuuance of Warrant of Arrest against Putin by ICC,"

  NIDS Commentary (No. 265, July 2023) *Japanese

• "Permissibility under International Law of Military Exercises and Practices - Focusing on the Case of the Ballistic Missile Fallout"

  NIDS Commentary (No. 236, August 2022) *Japanese

• "Status as Combatants of Foreign Members of Armed Forces - The Issue of Law on Ukraine Conflict"

  NIDS Commentary (No. 234, August 2022) *Japanese

• "Territorial Security - The Concept and the Legal Regime"

  NIDS Commentary (No.169, June 2021) *Japanese

• "Flag State Principle and National Security"

  NIDS Commentary (December 2020)

• "Fleet reviews - Features of the Imperial Japanese Navy, Maritime Self-Defense Forces, and Foreign Navies"

  NIDS Commentary (No.106, December 2019)

• "The Significance of the "Rule of Law" in the International Community"

  Briefing Memo (December 2018)

• "Maritime Security: Policies and Measures seen in the Third basic Plan on Ocean Policy and their Charactaristics, etc"

  NIDS Commentary (No.81, August 2018)

• "Maritime Security: Significance of the Freedom of Navigation and Related Challenge"

  EAST ASIAN STRATEGIC REVIEW 2018 (NIDS, August 2018)[co-authored with HARADA Yu]

• "Protection of Maritime Interest"

  The 20th Symposium (FY 2017), "Maintaining Maritime Order in the Asia-Pacific"（July 19, 2017）

• A Suit and Alternative Dispute Resolution"

  NIDS Briefing Memo (May 2017)

• "Rules in International Law on Marine Research"

  Hatou, no. 216 (September 2011) *Japanese

• "Response to Violation in International Waters"

  Hatou, no. 208 (May 2010) *Japanese

• "Specific Regime on Passage of Straits"

  Hatou, no. 205 (November 2009) *Japanese