Place and role of the Collective Security Treaty Organization in the process of building a regional security system after the collapse of the USSR

The Collective Security Treaty was signed in Tashkent 28 years ago, on May 15, 1992, by parties who were the new sovereign states formed after the collapse of the Soviet Union: Russia, Armenia, Kazakhstan, Kyrgyzstan, Uzbekistan, and Tajikistan. A year later, the mentioned Treaty was signed by Belarus, Georgia and Azerbaijan. A decade later, the format of the Treaty was transformed and led to the creation of the Collective Security Treaty Organization - CSTO, the charter of which was signed on October 7, 2002. Nowadays, the CSTO member states are Russia, Armenia, Belarus, Kazakhstan, Kyrgyzstan and Tajikistan, which have distinct features of security architecture. The role and the place of the CSTO in building a regional security system in the context of a transforming post-Soviet space are impacted by a number of different factors. Keywords: CSTO, role, place, collective security, post-Soviet space, South Caucasus, Transcaucasia, military-political alliance, security system.