Bulgaria and Ukraine have agreed on a long-term framework for security cooperation, including joint development and production of unmanned aerial vehicles. The arrangement forms part of a 10-year security agreement Ukraine +Seal+10-Year+Security+Deal+as+PM+Met+With+Zelensky+in+Kyiv" target="_blank">signed in Kyiv on Monday by acting Prime Minister Andrey Gyurov and Ukrainian President Volodymyr Zelensky . The Bulgarian delegation, which included five ministers, arrived without prior public