The Collective Security Treaty Organization involved an alliance by Armenia, Belarus, Kazakhstan, Kyrgyzstan, Russia, Tajikistan who all joined in 1994.
In 1992, six post-Soviet states belonging to the Commonwealth of Independent StatesRussia, Armenia, Kazakhstan, Kyrgyzstan, Tajikistan, and Uzbekistansigned the Collective Security Treaty (also referred to as the "Tashkent Pact" or "Tashkent Treaty"). Three other post-Soviet statesAzerbaijan, Belarus, and Georgiasigned the next year and the treaty took effect in 1994. 
