Simeonova I. PUBLIC ADMINISTRATION AS AN ELEMENT OF NATIONAL SUSTAINABILITY IN A CHANGING GEOPOLITICAL ENVIRONMENT: PUBLIC ADMINISTRATION AS AN ELEMENT OF NATIONAL SUSTAINABILITY IN A CHANGING GEOPOLITICAL ENVIRONMENT. JSAR [Internet]. 2026 Nov. 5 [cited 2026 Nov. 5];30(1):30-6. Available from: https://jsar.ftn.shu.bg/index.php/jsar/article/view/477