Date of issue: December 20, 2012.
The Collective Security Treaty Organization (CSTO; Russian: Организация Договора о Коллективной Безопасности Organizatsiya Dogovora o Kollektivnoy Bezopasnosti) is an intergovernmental military alliance which was signed on 15 May 1992. On 7 October 2002, the Presidents of Armenia, Belarus, Kazakhstan, Kyrgyzstan, Russia and Tajikistan signed a charter in Tashkent founding the CSTO.