According to a statement released on Monday by the Sputnik agency, the drills are taking place in the Harb-Maidon polygon, in the southeast of the country, under the codename Rubezh-2022.
About a thousand soldiers and more than 300 vehicles, including planes, helicopters and drones, are participating in the exercises, the CSTO press service specified.
The drills will be focused on eliminating enemy forces invading the territory of the CSTO member countries.
The CSTO is an organization with a political-military vocation, formed on May 15th, 1992, and which includes several countries of Eastern Europe and Central Asia, which were once part of the former Union of Soviet Socialist Republics.
Armenia, Belarus, Kazakhstan, Kyrgyzstan, Russia and Tajikistan are members of the organization, whose goal is to guarantee peace, security and stability in the post-Soviet region.
Uzbekistan, Azerbaijan and Georgia, former Soviet republics, were also part of the alliance but left it.