Karamyshev, Dmytro, and Valentyn Suvorov. “Efficiency of Multi-Level Governance and Common EU Security and Defence Policy under Conditions of Hybrid Threats”. Pressing Problems of Public Administration 1, no. 64 (June 27, 2024): 45-55. Accessed November 19, 2024. https://periodicals.karazin.ua/apdu/article/view/24060.