Collective Security Treaty Organization (CSTO)
Nagorno-Karabakh conflict More than 60,000 ethnic Armenians leave as Nagorno Karabakh ‘republic’ officially dissolves itself

While the exodus of ethnic Armenians and the dissolution of the self-declared republic may lead to the final settlement of the decades-old conflict in the South Caucasus region, it may also be the beginning of a long geopolitical battle between Russia and the West

Nagorno Karabakh refugees Thousands flee Nagorno Karabakh after Azerbaijan takes control of the breakaway region  

The issue has become a major geopolitical event as Armenia blames Russia for failing to check the Azeri aggression last week. Meanwhile, the US is trying to intervene in the country which is a part of CSTO