On 3-5 June, the Republic of Belarus hosted the second staff talks on the organization and conduct of the joint trainings with the CSTO Collective Rapid Reaction Forces (CRRF) “Interaction-2025”, special trainings with intelligence forces and means “Search-2025” and logistics “Echelon-2025” conducted as part of the joint operational-strategic training “Combat Brotherhood-2025”.
The CSTO Secretary General I.N. Tasmagambetov met with Ambassador Extraordinary and Plenipotentiary of the People's Republic of China to the Russian Federation Zhang Hanhui
On 27-30 May, in the city of St. Petersburg, on the basis of the Mikhailovsky Military Artillery Academy, a training and methodological meeting was held with the heads of the CSTO basic training and research organizations to coordinate joint training of military personnel and scientific work.
On 28 May 2025 in Bishkek, Chairman of the CSTO Collective Security Council, President of the Kyrgyz Republic Sadyr Japarov received the participants of the meeting of the Council of Defense Ministers of the Organization, held with the participation of CSTO Secretary General Imangali Tasmagambetov and Chief of the CSTO Joint Staff Colonel General Andrei Serdyukov.
On May 28, 2025, a regular meeting of the CSTO Council of Defense Ministers was held in Bishkek under the chairmanship of the Kyrgyz side. The event was attended by Secretary General Imangali Tasmagambetov and Colonel General Andrei Serdyukov, Chief of the Organization's Joint Staff.
The CSTO Acting Secretary General Valery Semerikov took part in the opening of the IX International Exhibition MILEX-2019 in the Republic of Belarus, which took place on May 15, 2019 in the historical and cultural complex "Stalin's Line" near Minsk

As President of Belarus Alexander Lukashenko noted in his greeting to participants and guests of MILEX-2019: “I am convinced that the exhibition will contribute to the further exchange of experience, will launch joint projects of tomorrow, backing them up with lucrative contracts.”
The second part of the opening ceremony was held in the largest sports complex of Belarus "Minsk-Arena", wh ere an impressive exhibition of the latest developments in the field of the military industry was located.
The MILEX-2019 exhibition has confirmed that the demand for this unique exhibition and forum event in the CSTO space is only growing. Both by quantitative and qualitative criteria, there is a steady positive dynamic, including as a significant international platform. In general, the exhibition MILEX-2019 is aimed at demonstrating the latest achievements in the development and modernization of weapons and military equipment, in addition, the exhibition creates favorable conditions for the development of military-technical cooperation, promotes the expansion of production and scientific and technical cooperation ties and business contacts, and concludes treaties, promotion of weapons, military and special equipment to foreign markets.
The MILEX-2019 is one of the most promising and significant exhibitions held in Belarus with a reputation as a serious international salon. This year, the exhibition area is more than 24,000 square meters, located in a modern comfortable complex in Minsk.