The Collective Security Treaty Organization (CSTO) military exercises “Indestructible Brotherhood-2026” and “Barrier-2026” have begun in Belarus.

Axar.az reports, citing the Belarusian Defense Ministry, more than 1,500 military personnel from five countries, over 300 pieces of military and specialized equipment, and around 80 drones are taking part in the exercises.

The command-and-staff exercise “Indestructible Brotherhood-2026” is being held in Belarus from October 12 to 16. It focuses on preparing for and conducting a peacekeeping operation by the CSTO Collective Peacekeeping Forces.

The “Barrier-2026” special exercise will focus on eliminating sources of biological threats within the area of responsibility of the CSTO Collective Peacekeeping Forces.

The CSTO comprises Russia, Belarus, Kazakhstan, Kyrgyzstan, Tajikistan and Armenia.

Armenia is not participating in the exercises.