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Max Planck Encyclopedia of Public International Law [MPEPIL]

Collective Security Treaty Organization (CSTO)

Alena Douhan

From: Oxford Public International Law (http://opil.ouplaw.com). (c) Oxford University Press, 2022. All Rights Reserved.date: 25 January 2022

Regional co-operation — Security assistance — Self-defence — Collective security — Peace keeping

Published under the auspices of the Max Planck Institute for Comparative Public Law and International Law under the direction of Professor Anne Peters (2021–) and Professor Rüdiger Wolfrum (2004–2020). 

1 The Collective Security Treaty Organization (‘CSTO’) is a regional collective security organization (Regional Cooperation; Collective Security). It originated from the Collective Security Treaty (‘CST’) concluded on 15 May 1992 within the Commonwealth of Independent States (CIS) by six CIS Member States (Armenia, Belarus, Kazakhstan, Kyrgyzstan, Russian Federation [Russia], and Tajikistan) for five years with the possibility of prolongation. For the next 10 years activities in the CST framework were administered with help from CIS organs (see Decision of the CIS...
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