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Collective Self-Defence in International Law

Research Project

Project/Area Number 26380057
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field International law
Research InstitutionThe University of Tokyo

Principal Investigator

Mori Tadashi  東京大学, 大学院公共政策学連携研究部・教育部, 教授 (90292747)

Project Period (FY) 2014-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords武力行使禁止原則 / 国際連合憲章 / 自衛権 / 集団的自衛権 / 武力不行使原則
Outline of Final Research Achievements

The right of self-defence, which was a focus of the discussion when the New Japanese Legislation for Peace and Security was deliberated by the Diet in 2015, is originally an international law concept, and this study examined it. As a result, it is submitted that there were two major ways of understanding about the right after the United Nations Charter entered into force in 1945; the right was understood according to the one of them by the International Court of Justice in the 1986 Nicaragua case judgment; i.e., the right shall be understood as the one "to assist another country in the exercise of its right of
individual self-defence".

Academic Significance and Societal Importance of the Research Achievements

国際法上の集団的自衛権の法的性質に関しては、従来様々な見解が示されてきた。学説、国家実行、国際判決の分析を通してそれを確定したことは、学術上大きな意味がある。また、集団的自衛権は、日本国憲法との関係でも大きな注目を集めており、憲法上の議論をする上でも、国際法上の概念を確定した意味は大きい。さらには、そうした研究結果を踏まえ、平和安全法制における集団的自衛権の行使にかかわる法制について、法的な評価を示すことができた。

Report

(6 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (12 results)

All 2019 2018 2017 2016 2015

All Journal Article (9 results) (of which Peer Reviewed: 2 results,  Acknowledgement Compliant: 1 results) Presentation (1 results) (of which Invited: 1 results) Book (2 results)

  • [Journal Article] 集団的自衛権概念の明確化-援用事例とニカラグア事件判決2019

    • Author(s)
      森肇志
    • Journal Title

      国際法のダイナミズム

      Volume: 書籍 Pages: 703-729

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 国際法/主権国家間関係の規律と国際問題への対応2019

    • Author(s)
      森肇志
    • Journal Title

      〔新版〕法学の世界

      Volume: 書籍 Pages: 36-47

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Collective Self-Defence in International Law and in the New Japanese Legislation for Peace and Security (2015)2018

    • Author(s)
      Tadashi MORI
    • Journal Title

      Japanese Yearbook of International Law

      Volume: 60 Pages: 158-170

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] 集団的自衛権の法的構造―ニカラグア事件判決の再検討を中心に2017

    • Author(s)
      森肇志
    • Journal Title

      国際法外交雑誌

      Volume: 115 Pages: 25-49

    • NAID

      40021125718

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] 国連憲章と平和安全法制―集団的自衛権の法的規制2016

    • Author(s)
      森肇志
    • Journal Title

      論究ジュリスト

      Volume: 19 Pages: 108-114

    • Related Report
      2016 Research-status Report
  • [Journal Article] 日米安保条約2016

    • Author(s)
      森肇志
    • Journal Title

      法学教室

      Volume: 433 Pages: 130-136

    • Related Report
      2016 Research-status Report
  • [Journal Article] 新安保法制と国際法上の集団的自衛権2016

    • Author(s)
      森肇志
    • Journal Title

      国際問題

      Volume: 648 Pages: 6-15

    • Related Report
      2015 Research-status Report
  • [Journal Article] 集団的自衛権行使容認のこれから-閣議決定から法制整備へ(上)2015

    • Author(s)
      森肇志
    • Journal Title

      UP

      Volume: 509 Pages: 1-7

    • NAID

      40020382232

    • Related Report
      2014 Research-status Report
  • [Journal Article] 集団的自衛権行使容認のこれから-閣議決定から法制整備へ(下)2015

    • Author(s)
      森肇志
    • Journal Title

      UP

      Volume: 510 Pages: 45-50

    • NAID

      40020407618

    • Related Report
      2014 Research-status Report
  • [Presentation] 現代国際社会における集団的自衛権2015

    • Author(s)
      森肇志
    • Organizer
      国際法学会
    • Place of Presentation
      名古屋国際会議場(愛知県名古屋市)
    • Year and Date
      2015-09-19
    • Related Report
      2015 Research-status Report
    • Invited
  • [Book] Origins of the Right of Self-Defence in International Law2018

    • Author(s)
      Tadashi MORI
    • Total Pages
      274
    • Publisher
      BRILL
    • ISBN
      9789004354975
    • Related Report
      2017 Research-status Report
  • [Book] 国際法で世界がわかる2016

    • Author(s)
      森肇志ほか
    • Total Pages
      342
    • Publisher
      岩波書店
    • Related Report
      2016 Research-status Report

URL: 

Published: 2014-04-04   Modified: 2020-03-30  

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