DOMESTIC SECURITY AND DEFENSE PROCUREMENT SYSTEM: STRUCTURAL ANALYSIS, PROBLEMS AND PROSPECTS FOR IMPROVEMENT

The article presents a structural analysis of the procurement system of the domestic security and defense sector under martial law and the transformation of state governance mechanisms. It is substantiated that the effectiveness of the defense procurement system is of decisive importance for ensuring national security, the state's defense capability, and the proper use of budget resources. It is established that in modern conditions, the defense procurement system of Ukraine operates in an environment of high uncertainty, dynamic external and internal threats, which necessitates its adaptation to new security and management realities. The study reveals the essence of the defense procurement system as a complex institutional and legal mechanism that encompasses a set of subjects, objects, processes, legal norms, and control instruments aimed at meeting the needs of the security and defense sector. The structure of the system at the macro and micro levels is characterized, the political-strategic, executive and control-supervisory levels are highlighted, and the role of key actors is analyzed, in particular the Cabinet of Ministers of Ukraine, the Ministry of Defense of Ukraine, the Defense Procurement Agency, state customers, suppliers and state control bodies. Particular attention is paid to the transformation of defense procurement under the influence of martial law, the simplification of procedures, the development of centralized and decentralized procurement models, as well as the implementation of digital management tools, in particular the DOT-Chain system and the Brave1 innovative platform. The main problems of the system's functioning are identified, including an insufficient level of transparency, limited competition, the presence of corruption risks, institutional difficulties in control and the need for further harmonization of legislation with NATO and EU standards. It was concluded that further improvement of Ukraine's defense procurement system requires a comprehensive approach, which includes strengthening the institutional capacity of management entities, developing digitalization, improving control mechanisms, supporting the domestic defense-industrial complex, and expanding international cooperation in the field of security and defense.