Evolution of democratic oversight of security institutions: the experience of the United States and the United Kingdom

This article provides a comprehensive analysis of the evolution of democratic oversight mechanisms over security and law-enforcement institutions in the United States and the United Kingdom. Drawing on historical, legal, and institutional developments, the study examines how these states gradually recognized the necessity of establishing effective civilian and parliamentary control over intelligence agencies, the armed forces, and law-enforcement bodies. The findings demonstrate that democratic oversight is a long-term, adaptive process, shaped by political culture, social crises, and the need to balance national security with the protection of human rights. The relevance of this experience for states undergoing security sector transformation, including Ukraine, is also assessed