YEREVAN, SEPTEMBER 28, ARMENPRESS. Special exercises "Thunder-2021" of the CSTO ware held in Armenia from September 24-28. The special units of the Police of the Republic of Armenia, Ministry of Internal Affairs of the Republic of Belarus, the Ministries of Internal Affairs of the Kyrgyz Republic, as well as the Drug Control Agency under the President of the Republic of Tajikistan took part in the exercises. The border units of the Ministries of Defense, Emergency Situations and the National Security Service of Armenia were also involved in the exercises with the use of aviation, military and special equipment.