On May 18, CSTO Secretary General Talatbek Masadykov, together with the heads of the diplomatic missions of the CSTO member states in Vienna, took part in a solemn wreath and flower-laying ceremony at the monument to the Soviet Liberator Soldier at Schwarzenbergplatz.
On May 18, 2026, a meeting was held in Vienna between Acting CSTO Deputy Secretary General Samat Ordabayev and Coordinator of the Transnational Threats Department of the OSCE Secretariat Elena Kupchina.
On May 18, 2026, a meeting was held in Vienna between the CSTO Secretary General Talatbek Masadykov and OSCE Secretary General Feridun Sinirlioğlu.
On May 15, 2026, a meeting of the CSTO Secretary General Talatbek Masadykov with media representatives of the CSTO member states was held at the CSTO Secretariat to mark the 34th anniversary of the signing of the Collective Security Treaty.