Sydiaha V. TRANSFORMATION OF THE EUROPEAN UNION’S SECURITY POLICY IN THE CONTEXT OF RUSSIAN AGGRESSION AGAINST UKRAINE: INSTITUTIONAL AND CONCEPTUAL DIMENSIONS. Актуальні проблеми сталого розвитку [Internet]. 2025 Aug. 15 [cited 2026 Jun. 26];2(5):220-34. Available from: https://journals.csr.com.ua/index.php/sustainability/article/view/157