Updated on 2024/12/21

写真a

 
BANZAI, Hiroyuki
 
Affiliation
Faculty of Law, School of Law
Job title
Professor
Degree
Master of Law ( 1998.04 Waseda University )
Doctor of Laws ( 2016.02 Waseda University )

Research Experience

  • 2011.04
    -
    　

    Professor, School of Law, Waseda University

  • 2009.04
    -
    2011.03

    Associate Professor, School of Law, Waseda University

Education Background

  • 　
    -
    2003.03

    Waseda University   Graduate School, Division of Law   Public International Law  

  • 　
    -
    1995

    Waseda University   Faculty of Laws  

Committee Memberships

  • 2022.09
    -
    Now

    Japanese Society of International Law  Board Member

  • 2003.04
    -
    Now

    Ministry of Foreign Affairs  Member of the Study Group for International Law

  • 2018.04
    -
    2021.03

    日本台湾交流協会  日台若手研究者共同研究事業・国際法部門（座長）

  • 2009.04
    -
    2010.03

    Ministry of Foreign Affairs  Member of the Wise Persons Group for Japan-EU Relationship

Professional Memberships

  • 　
    　
    　

    Japanese Association of International Law, Japanese Association of World Law, American Society of International Law, EU Studies Association JAPAN

Research Areas

  • International law

Research Interests

  • Sources of Law, International Responsibility of States, Disarmament and Non-Proliferation of WMD

Awards

  • Adachi Mineichiro Memorial Award

    2016.10   Adachi Memorial Foundation   Study on State Responsibility for Internationally Wrongful Act: Basic Problems of the Theory on State Responsibility

 

Papers

  • Impacts on Jus Cogens: Impact on the Law of State Responsibility and Law of Treaties

    Hiroyuki Banzai

    Global Impact of the Ukraine Conflict     25 - 47  2023.12

    Authorship：Lead author

    DOI

    Scopus

  • Reissuing the Settlement of Problems concerning Property and Claims between Japan and Republic of Korea: International Law Perspective

    Hiroyuki Banzai

      4   301 - 320  2022.12

  • Emergencey in Taiwan Region and Japan’s Peace and Security Legislation

    Hiroyuki Banzai

    New Legislation on Peace and Security in Japan and the Study on Ocean Policy     1 - 18  2022.11

    Authorship：Corresponding author

  • Diplomatic Framework over the Japan-Taiwan Relationship

    Hiroyuki Banzai

    Japan-Taiwan Economic Intercourse and International Law     1 - 17  2022.07

    Authorship：Lead author

  • Development of the Export Control Regulation to the Dual Use Goods in EU Law

    Hiroyuki Banzai, Shun Oshita

    Keio Law Journal   48 ( 48 ) 181 - 201  2022.03  [Invited]

    Authorship：Lead author

  • Assurance of Non-Repetition in the Japan-DPRK Pyongyang Declaration

    Hiroyuki Banzai

    Encyclopedia of Public International Law in Asia   1   175 - 177  2021.12

  • The Ehime Maru Incident

    Hiroyuki Banzai

    Encyclopedia of Public International Law in Asia   1   174 - 175  2021.12

  • Attributing the Abduction of Japanese Citizens to North Korea through its Agents

    Hiroyuki Banzai

    Encyclopedia of Public International Law in Asia   1   173 - 174  2021.12

  • Protection of the Company: Barcelona Traction, Light and Power Company, Limited

    Hiroyuki Banzai

    Jurist   ( 255 ) 148 - 149  2021.09  [Invited]

    Authorship：Lead author

  • Establishing Responsibility of a State for its Internationally Wrongful Acts

    Hiroyuki Banzai

      ( 491 ) 35 - 40  2021.08  [Invited]

    Authorship：Lead author

  • Joint Research Project of Young Scholars of Japan and Taiwan（International Law Group）

    Hiroyuki Banzai

      ( 962 ) 21 - 25  2021.05  [Invited]

    Authorship：Corresponding author

  • Maritime Counter-Proliferation of Weapons of Mass Destruction and the Freedom of Navigation: A Japanese Lawyer’s Perspective

    Hiroyuki Banzai

    Implementation of the United Nations Convention on the Law of the Sea: State Practice of China and Japan     95 - 111  2021.04

    Authorship：Lead author

    DOI

  • International Responsibility of States for Injury Caused by COVID-19

    Hiroyuki Banzai

    International Affairs   ( 699 ) 17 - 27  2021.03  [Invited]

    Authorship：Lead author

  • [Book Review] Hendo-suru Kokusaishakai to Kokusaiho No Kino [How International Law Works in the Ever-changing International Society], edited by Masaharu Yanagihara. Tokyo: Shinzansha, 2018. Pp. xvi, 244.

    Hiroyuki Banzai

    Japanese Yearbook of International Law   63   334 - 338  2021.02  [Invited]

    Authorship：Lead author

  • 国際義務の違反認定における『国家責任法と条約法の交錯』―南シナ海仲裁判決を素材として―

    萬歳寛之

    現代国際法の潮流II―人権、刑事、遵守、責任、武力紛争     283 - 300  2020.11  [Invited]

    Authorship：Lead author

  • South China Sea Case

    Hiroyuki Banzai

    M. Nishii and J. Tsuruta (eds.), Lectures on International Environmental Law     260 - 263  2020.04

    Authorship：Lead author

  • ’Forced Labors' Issues and Japan-Korea Claims Agreement

    HIroyuki Banzai

      ( 1544 ) 280 - 281  2020.04  [Invited]

    Authorship：Lead author

  • South China Sea and International Law

    Hiroyuki Banzai

        1 - 22  2020.02  [Invited]

    Authorship：Lead author

  • Japan-Korea Claims Agreement and the Cases on Forced Labor Issues in Korea

    Hiroyuki Banzai

    Jurist   ( 30 )  2019.08  [Invited]

    Authorship：Lead author

  • Disputes on State Responsibility for the Restoration of a Common Interest in International Law

    Hiroyuki BANZAI

    Journal of International Law and Diplomacy   117 ( 1 ) 25 - 48  2018.05  [Refereed]

    Authorship：Lead author

    　View Summary

    In this article, the relationship between a responsible state and a state to invoke the responsibility will be examined with reference to breach of obligations under the rules of customary law or treaties, in which the regimes of common interests in international community are established.
    The “mise en œuvre” of state responsibility has taken a form of “claim for reparation from the injured state to the responsible state”, such as Corfu Channel case (1949) and Case concerning United States Diplomatic and Consular Staff in Tehran (1980), based on the claims for reparation to damages of states caused by internationally wrongful acts. Since that is thought to be a single form of international claims, the exercise of diplomatic protection should be theorized in the same form as the direct injury to state itself. Thus, the customary methods of international claims have been evolved on the premise that the parties of a dispute shall be individualized in order to establish a bilateral legal relationship of state responsibility.
    According to the International Court of Justice (ICJ), the norms of common interests are the ones that “one cannot speak of individual advantages or disadvantages to States, or of the maintenance of a perfect contractual balance between rights and duties.” In such a norm, the states “do not have any interests of their own; they merely have, one and all, a common interest, namely, the accomplishment of those high purposes which are the raison d'être of the convention” (Reservations to the Convention on the Prevention and Punishment of the Crime of Genocide, I.C.J. Reports 1951, p. 23). In the breach of this type of norms, there may be no specific states that are injured individually.
    In the merit of South West Africa Case (1966), the applicant states were held to have no locus standi for lack of the material interests of their own under Article 2 of the Mandate and Article 22 of the League Covenant. After this judgement, various efforts have been made to overcome the traditional idea of bilateralism of international claims.
    A provision of the third state remedy for the restoration of a common interest was drafted in the Articles on Responsibility of States for Internationally Wrongful Acts (2001). This is the famous provision of Article 48. According to the International Law Commission (ILC), however, it includes some elements of progressive development, not existing law.
    Irrespective of such a hesitation of the ILC, the influence of Article 48 had been strong enough that the ICJ finally has come to affirm locus standi of third states in the case of Questions Relating to the Obligation to Prosecute or Extradite (2012) and Whaling in the Antarctic (2014). We have to be prudent. The two cases are not radical change from South West Africa Case. Rather, these shall be deemed to be judged with deliberate reference to the precedents of cases on state responsibility, found out in the contentious cases and advisory opinions after South West Africa Case.

    DOI

  • Function of the Provisions of Responsibility of States in Treaties

    Hiroyuki Banzai

      ( 7 ) 3 - 20  2015.08

    Authorship：Lead author

  • The Concept of "Reparation" in the Law of State Responsibility for Internationally Wrongful Acts

    Hiroyuki Banzai

    Waseda Law Review   88 ( 2 ) 65 - 128  2013.03  [Refereed]

    Authorship：Lead author

    CiNii

  • 東日本大震災における海外支援受入の問題点

    Hiroyuki Banzai

    早稲田大学社会安全政策研究所紀要   ( 4 )  2012.03

    Authorship：Lead author

  • 国家責任法適用の基礎としての国家機能の性格—領域主権と「管轄又は管理」

    萬歳寛之

    早稲田大学法学研究科組織的な大学院教育改革推進プログラム『法学研究の基礎〈法と権利〉』     233 - 253  2011.03  [Invited]

    Authorship：Lead author

  • Judicial Process of Decision on the Responsibility of States for Internationally Wrongful Acts : the Nature of "Due Diligence"

    Hiroyuki Banzai

    Waseda Law Review   86 ( 2 ) 89 - 130  2011.03  [Refereed]

    Authorship：Lead author

    CiNii

  • 気候安全保障をめぐる国際的動向

    萬歳寛之

    季刊社会安全   ( 78 ) 2 - 6  2010.10

    CiNii

  • The Proliferation Security Initiative and International Law of the Sea: A Japanese Lawyer's Perspective

    Hiroyuki Banzai

    Journal of East Asia and International Law   3 ( 1 ) 7 - 28  2010.05  [Invited]

    Authorship：Lead author

  • 拡散に対する安全保瞳構想(PSI)に関する国際法上の評価

    Hiroyuki Banzai

    早稲田大学社会安全政策研究所紀要   ( 2 ) 145 - 168  2010.03

    Authorship：Lead author

    CiNii

  • NBCテロ犯罪に関する国際義務の履行確保責任-安保理決議1540を素材として-

    萬歳寛之

    島田征夫・古谷修一編『国際法の新展開と課題(林司宣先生古稀祝賀)』     3 - 30  2009.04

  • Sources of International Law - Toward Positive Participation in the Formation of General International Law-

    Hiroyuki BANZAI

    Korea International Law Review   ( 27 ) 169 - 187  2008.04  [Invited]

    Authorship：Lead author

  • International Regulation on the Non-Proliferation of the Weapons of Mass Destruction

    Hiroyuki BANZAI

      19 ( 2 ) 172 - 123  2006.02

    DOI CiNii

  • International Regulation for Non-Proliferation of WMD

    Hiroyuki Banzai

    Surugadai Journal of Law and Politics   19 ( 2 ) 123 - 172  2006.02

    Authorship：Lead author

  • 国家責任法における個人損害

    萬歳寛之

    石川明編『国際経済法と地域協力(櫻井雅夫先生古稀記念論集)』(信山社、2005年)     97 - 131  2005.02

  • 国際法における法典化概念の特質-国連国際法委員会を中心として-

    萬歳寛之

    駿河台法学   18 ( 1 ) 1 - 138  2004.09

  • Invocation of State Responsibility in Breach of Obligation erga omnes

    Hiroyuki Banzai

    Waseda Law Journal   52   251 - 294  2002.03  [Refereed]

    Authorship：Lead author

    CiNii

  • 国家責任の認定過程における国内法の機能と役割-外交的保護に関する紛争を素材として-

    萬歳寛之

    早稲田大学大学院法研論集   ( 94 ) 177 - 204  2000.06

    CiNii

  • 国家契約に関する伝統的国家責任論の再検討-セルビア公債事件を素材として-

    萬歳寛之

    早稲田大学大学院法研論集   ( 89 ) 239 - 265  1999.03

    CiNii

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Books and Other Publications

  • The Law of the Sea

    ( Part： Edit)

    2024.08 ISBN: 4797228822

    ASIN

  • Japan-Taiwan Economic Intercourse and International Law

    Hiroyuki Banzai( Part： Edit, Diplomatic Framework over the Japan-Taiwan Relationship)

    2022.08 ISBN: 4792334225

    ASIN

  • Brussels Effect: How the European Union Rules the World

    Katuhiro Shoji( Part： Joint translator, Chapter 9 The Future of the Brussels Effect)

    Hakusuisha  2022.05 ISBN: 9784560098936

  • International Organizations （New Edition）

    Katsuhiro Shoji( Part： Contributor, Introduction, Chapter 1, Chapter 9)

    IWANAMI SHOTEN  2021.07 ISBN: 9784000289238

  • Politics of Borders

    Longo, Matthew, Katsuhiro Shoji( Part： Contributor, Introduction, Chapter 3)

    IWANAMI SHOTEN  2020.12 ISBN: 9784000229739

  • Study on the Responsibility for Internationally Wrongful Acts

    Hiroyuki Banzai( Part： Sole author)

    Seibun-do  2015.09 ISBN: 4792333342

  • 国際法学入門

    島田征夫編

    成文堂  2011.06 ISBN: 9784792332846

  • 国際海洋法

    島田征夫, 林司宣編

    有信堂  2010.10 ISBN: 4842040602

  • 国際機構

    庄司克宏編

    岩波書店  2006.04 ISBN: 4000280422

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Presentations

  • Recent Trends of the Law on State Responsibility

    Hiroyuki Banzai  [Invited]

    Seoul Academy of International Law 

    Presentation date： 2024.07

    Event date：
    2024.07
    　
    　

  • Recent Trends on the Law of State Responsibility

    Hiroyuki Banzai  [Invited]

    Seoul Academy of International Law 

    Presentation date： 2023.07

  • Capacity Building in the Field of Maritime Safety and Implementation

    Hiroyuki Banzai, Moderator  [Invited]

    GCTF Work Shop: Sustainable Oceans based on the Rule of Law 

    Presentation date： 2022.10

    Event date：
    2022.10
    　
    　

  • Emergencies in Taiwan Area and the Peace and Security Legislation of Japan

    Hiroyuki Banzai  [Invited]

    New Peace and Security Legislation of Japan and the Study and Analysis on the Ocean Policy 

    Presentation date： 2022.06

    Event date：
    2022.06
    　
    　

  • Reissuing the claims of the former civilian workers from the Korean Peninsula: International law perspective

    Hiroyuki Banzai  [Invited]

    International Law Association Japan Branch 

    Presentation date： 2022.04

  • 'Legal Disputes' in East Asia

    Hiroyuki Banzai  [Invited]

    Kanagawa-21th Century Meeting Sponsored by Yokohama Branch of Mainichi Shimbun 

    Presentation date： 2021.06

    Event date：
    2021.06
    　
    　

  • 'Due Diligence' in the Context of Cyber Security : Challenges to Traditional International Law

    Hiroyuki Banzai  [Invited]

    Jeju Forum for Peace and Prosperity 2019  (Jeju)  Jeju Special Self-Governing Province

    Presentation date： 2019.05

    　View Summary

    Taking into account the difference between cyber space and allocation of territorial space of States, national security in the context of cyber were dealt with, especially for the reference to the concept of 'due diligence'.

  • The 1965 'Claims Agreement' and the Judgement of Supreme Court of Korea on Forced Labor Issues

    Hiroyuki Banzai  [Invited]

    Current issues on Japan - Korea relationship: Legal Perspective  (Hiroshima)  Hiroshima City University Hiroshima Peace Institute

    Presentation date： 2019.04

    　View Summary

    In the presentation, the contents of 1965 Claims Agreement and the logic of a series of Korean courts on forced labor were dealt with from the perspective of international law.

  • 国際法の観点から見た韓国徴用工問題

    萬歳寛之  [Invited]

    東アジアにおける『法の支配』の構築に向けて  (東京)  経済俱楽部

    Presentation date： 2019.02

    　View Summary

    元徴用工に関する韓国大法院判決の問題点を日韓請求権・経済協力協定だけでなく、日韓国交正常化の一般的文脈や日本の戦後補償裁判との関係で評価を行った。

  • Cybersecurity and International Law

    Hiroyuki Banzai  [Invited]

    New Horizons in Korean Diplomacy: Challenges, Issues, and Responses in the Era of the Fourth Industrial Revolution  (Seoul)  Korea National Diplomatic Academy

    Presentation date： 2018.12

  • The Evolution of Rule based International System

    Hiroyuki Banzai  [Invited]

    East Asia and the Rules-Based International System: Leadership and Interests  (Seoul)  Institute of Foreign Affairs and National Security, Wilton Park

    Presentation date： 2017.11

  • The Role of International Law in East Asia

    Hiroyuki Banzai  [Invited]

    Jeju Forum for Peace and Prosperity  (Jeju)  Jeju Province

    Presentation date： 2017.06

    　View Summary

    I discussed common theme of Peace and Prosperity in East Asia from the perspective of what can be considered the most important of the various roles of international law ( sovereign equality, non-use of force and peaceful settlement of disputes) in this region today, considering the situations such as maritime conflicts in South China Sea and North Korea's nuclear and missile development efforts.

  • South China Sea Arbitration Award in the Development Process of the Law of the Sea: Maritime Security and Freedom of Navigation

    Hiroyuki Banzai  [Invited]

    International Seminar on Asia-Pacific Cooperative Security  (Taipei)  International School on Disarmament and Research on Conflicts (ISODARCO)

    Presentation date： 2017.05

    　View Summary

    South China Sea Arbitration Award was the theme of the presentation. While the Award is in the field of law of the sea, the presentation was related to those security issues which are a whole theme of this seminar.

  • Japan’s Legislation for Peace and Security: From the viewpoint of international law

    Hiroyuki Banzai  [Invited]

    International Conference on Prospects for Peace and Prosperity in the New Age  (Taipei)  Tamkang University

    Presentation date： 2017.03

    　View Summary

    The theme was on the significance and challenges of the Legislation for Peace and Security, especially in relation to the right to collective self-defense.

  • Invocation of State Responsibility to Restore the Common Interests of International Community

    Hiroyuki Banzai

    Japanese Society of International Law 

    Presentation date： 2016.09

  • Japan's Security and International Law

    Hiroyuki Banzai  [Invited]

    Peking University

    Presentation date： 2015.10

    　View Summary

    The theme of presentation was on legal response to changes of security environment of Japan after WWII.

  • On the Draft of Japan's Legislation of Peace and Security

    Hiroyuki Banzai  [Invited]

    (Beijing)  ChineseAcademy ofSocialSciences, Institute of Japanese Studies

    Presentation date： 2015.08

  • The Role of International Law Commission in the Process of Formation of International Customary Law

    Japanese Association of International Law 

    Presentation date： 2006.10

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Research Projects

  • 日韓関係における1965年体制の再検討―日韓請求権協定の解釈論―

    日本学術振興会  科学研究費助成事業

    Project Year :

    2024.04
    -
    2027.03
     

    金 恩貞, 萬歳 寛之, 玉田 大, 大西 裕

  • 国際法における自己完結的制度の再検討：経済的威圧に対する集団的対抗措置の可能性

    日本学術振興会  科学研究費助成事業

    Project Year :

    2024.04
    -
    2027.03
     

    石川 義道, 萬歳 寛之, 張 博一

  • International Legal Regulation concerning the Maritime Cyber Security: Law of State Responsibility and Law of the Sea

    Nomura Foundation 

    Project Year :

    2021.04
    -
    2024.03
     

    Hiroyuki Banzai, Makoto Seta

  • International Enforcement for Domestic Implementation of International Legal Norms of Common Interests

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

    Project Year :

    2017.04
    -
    2020.03
     

    Banzai Hiroyuki

    　View Summary

    Among the international norms, there is a type of obligation vis-a-vis a society as a whole, and it is called as an obligation erga omnes. It shows that a common interest can be perceived even in international community, where there still remains a decentralized character. But it is difficult to invoke the responsibility of a state which breached an obligation erga omnes, due to the lack of its implementation or execution by superior organs. In this research, the system to invoke the responsibility in the case of breach of an obligation erga omnes is dealt with in the context of the dispute settlements in the International Court of Justice and the non-compliance procedures in the field of human rights treaties and treaties on disarmament/non-proliferation.

  • International and Domestic Implementation of International legal norms establishing a common interest

    Japan Society for the Promotion of Science 

    Project Year :

    2017.04
    -
    2020.03
     

  • Model of international legislation process on the system for ensuring to implement international law

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

    Project Year :

    2010.04
    -
    2013.03
     

    BANZAI Hiroyuki

    　View Summary

    The purpose of this study has been to examine the relationship between the law of State responsibility and the treaty-regimes providing for the rules on the violations of the norms of international law. While the range of the law of State responsibility shall be limited to the “breach” which gives rise to the obligation of “reparation”, the sui generis regimes of multilateral treaties, such as “non-compliance” procedure in the conventions of environment, will be functioned at the stage of the institutional management within the treaty machinary that has the effect of ceasing to give rise to the obligation to make reparation. The relationship between the law of State responsibility and the treaty-regimes may be characterized, not as prevailing over the other, but as “complementary” through their mutual collaboration

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Misc

 

Syllabus

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Sub-affiliation

  • Faculty of Law   Graduate School of Law

  • Faculty of Social Sciences   Graduate School of Social Sciences

  • Faculty of Political Science and Economics   School of Political Science and Economics

  • Affiliated organization   Global Education Center

Research Institute

  • 2023
    -
    2024

    Waseda Center for a Carbon Neutral Society   Concurrent Researcher

Internal Special Research Projects

  • 国連海洋法条約体制の規模構造-一般法と特別法の関係-

    2019  

    　View Summary

    　国連海洋法条約は、「海の憲法」とも呼ばれ、包括性を有する一般法と考えられている一方で、特段の規制を必要とする事項やより高次の規制を求める地域のある場合には、特別の条約（特別法）が締結されている。本研究では、海洋法条約及び関連諸条約によって作り上げられた法秩序を総称的に「国連海洋法条約体制」と呼ぶ。一般に「特別法は一般法を破る」の原則が妥当するとされる。しかし、同体制では、海洋法条約の海域区分を前提とした特別法としての条約が締結されたり、海洋法条約以前から存在する多国間条約が参照規範とされたりしているため、一般法と特別法の区別よりも、法益に注目した規範構造の把握が必要である点を検討した。

  • 国際法の分断化問題と人権・環境・経済・海洋分野における統合の現状と課題

    2016  

    　View Summary

    本研究では、国際法の統合的発展の観点から問題視されてきた「国際法の分断化」について、条約制度と一般国際法制度との関係性という総論的側面と、人権・環境・経済・海洋という専門化が進行する個別分野の実証的研究という各論的側面を包括的に検討した。その結果、国際法の分断化の側面には、分野内・分野間分断化や水平的・垂直的分断化の形態が存在することがわかった。それゆえ、条約解釈による規範的統合だけでなく、運用・執行段階における実務的調整や立法段階における制度設計を含めたかたちで分断化対策としての統合論のあり方を解明することの重要性を析出した。