The Kyrgyz capital of Bishkek will host an informal meeting of leaders of the Collective Security Treaty Organization member nations on April 14.

Citing the Kremlin spokesman Dmitry Peskov, Russian media outlets report Russian President Vladimir Putin will hold an informal meeting with leaders of Armenia, Kazakhstan, Kyrgyzstan and Tajikistan in Bishkek on April 14.

According to him, the CSTO informal summit will take place on the occasion of the 25th anniversary of the founding of organization. 

Bishkek is also scheduled to host a meeting of the Supreme Eurasian Economic Council at the level of the leaders of the countries of the Eurasian Economic Union (EAEU) on 14 April.

The regional security organization was initially formed in 1992 for a five-year period by the members of the CIS Collective Security Treaty (CST) -- Armenia, Kazakhstan, Kyrgyzstan, Russia, Tajikistan, and Uzbekistan, which were joined by Azerbaijan, Georgia, and Belarus the following year.  A 1994 treaty reaffirmed the desire of all participating states to abstain from the use or threat of force, and prevented signatories from joining any “other military alliances or other groups of states” directed against members states.  The CST was then extended for another five-year term in April 1999, and was signed by the presidents of Armenia, Belarus, Kazakhstan, Kyrgyzstan, Russia, and Tajikistan.  In October 2002, the group was renamed as the CSTO.  Uzbekistan that suspended its membership in 1999 returned to the CSTO again in 2006 after it came under international criticism for its brutal crackdown of antigovernment demonstrations in the eastern city of Andijon in May 2005.  On June 28, 2012, Uzbekistan announced that it has suspended its membership of the CSTO, saying the organization ignores Uzbekistan and does not consider its views.  The CSTO is currently an observer organization at the United Nations General Assembly.