Over the past one hundred years, the conceptual and legal aspects of collective security have been the subject of much debate. Rapid developments within the United Nations, its precursor the League of Nations, and regional security institutions, as well as the interaction between them, mean this debate has not so far succeeded in capturing the essence and implications of collective security. These developments in State and institutional practice strike at the heart of the entire system of collective security, which consists of universal, regional, and sub-regional levels, and indicate how the relationship between these various levels should be construed. Although the idea of collective security has raised high political expectations, it has always been based on legal instruments. Consequently, legal principles determine how far the delegated powers of collective security institutions extend and how the competencies of the United Nations relate to those of regional organisations. This book demonstrates that this inter-level interaction could find its expression in cooperation as well as confrontation between various collective security institutions, and influence the scope of competence of relevant collective security organs. This process then reinforces the concept of the unity of the multi-faceted system of collective security within which no institution has the power to conclusively define or interpret its own competence or that of other institutions. The book's originality lies in its dynamic and decentralised approach that focuses on the interaction between the different levels of collective security and in its comprehensive coverage of all pertinent institutions, competences, and relevant practice.
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1 Essence and Definition of Collective Security
2 Collective Security Institutions
3 The Regime of Competence Allocation
4 The Identification of a Threat
5 Responses to Threats
6 SelfDefence and Collective Security
accordance adopted African Union aggression AJIL Arab League arms embargo Article 39 Article 41 Article 53 Assembly authorization basis binding breach cease-fire Chapter VII Charter collective security competence complementarity conflict prevention consent Council’s Darfur Declaration Defence deployment determination Dinstein dispute ECOMOG ECOWAS effective enforcement action ensure established European Union framework Haiti humanitarian Ibid ICJ Reports implementation imposed institutions international law international peace interpretation intervention involvement Iraq jurisdiction KFOR Liberia Libya mandate matter measures military mission necessary necessity and proportionality objective obligations paragraph paras parties Peace Agreement peace and security peace operations peace-keeping forces political position powers preamble principal organs principle Protocol pursuant reference regional organizations relation relevant Resolution 678 responsibility role Sanctions Committee Sarooshi Secretary-General Secretary-General’s Security Council Resolution self-defence settlement Sierra Leone situation Somalia specified subsidiarity Tadić tasks territory threat tion Treaty UNAMID United Nations UNOSOM UNPROFOR violation