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.

On 27 May 2025, the CSTO Secretariat hosted a working meeting between the Deputy Secretary General of the Collective Security Treaty Organization Samat Ordabayev and the Special Representative of the UN Secretary General for Central Asia, Head of the UN Regional Centre for Preventive Diplomacy for Central Asia (UNRCCA) Kakha Imnadze.

On 27 May 2025, the CSTO Secretariat hosted a working meeting between Valery Semerikov, the CSTO Deputy Secretary General, and Idris Lallali, Director of the African Union Counter-Terrorism Centre.