Collective Security Treaty Organization (Discord)

The Collective Security Treaty Organization (CSTO; Russian: Организация Договора о Коллективной Безопасности, Organizacija Dogovora o Kollektivnoj Bezopasnosti, ODKB) is an intergovernmental military alliance that was signed on 15 May 1992.

The organization was more or less dissolved in 2031 when World War III began, and in 2036 it was formally disbanded with the beginning of the Second Russian Civil War.

Member states
Main members
 * Flag of Russia.svg Russia (Leader, 1994–2036)
 * Flag of Armenia.svg Armenia (1994–2036)
 * Flag of Belarus.svg Belarus (1994–2034)
 * Flag of Kazakhstan.svg Kazakhstan (1994–2036)
 * Flag of Kyrgyzstan.svg Kyrgyzstan (1994–2036)
 * Flag of Tajikistan.svg Tajikistan (1994–2036)
 * Flag of Serbia.svg Serbia (2018–2031)
 * Flag of Iran.svg Iran (2018–2036)
 * Flag of Turkmenistan.svg Turkmenistan (2018–2019)

Observers
 * Flag of Afghanistan.svg Afghanistan (2013–2036)

Former members
 * Flag of Azerbaijan.svg Azerbaijan (1994–1999)
 * Flag of Georgia.svg Georgia (1994–1999)
 * Flag of Uzbekistan.svg Uzbekistan (1994–1999, 2006–2012)