Armenia will lose a lot if it decides to withdraw from the CSTO - Matinko and Yerevan will lose a lot if it decides to withdraw from the Collective Security Treaty Organization. In an interview with journalists following his visit to Vietnam, Federation Council spokesperson Valentina Mavionko said. It is Armenia's right to remain a member of the CSTO or not. If the opposite is true, Armenia will lose a lot. @alphanewsam Subscribe to Alpha News VK - Zen - Site - TikTok.