GLOBAL STRUCTURAL SHIFTS IN FOOD SUPPLY CHAINS AND THEIR IMPACT ON THE RESILIENCE AND SECURITY OF NATIONAL ECONOMIES

The article provides a comprehensive analysis of global structural transformations in food supply chains and their impact on the resilience and security of national economies, with particular attention to Ukraine’s agricultural sector. Food supply chains are conceptualized as complex adaptive socio-economic systems embedded in national and global security architectures, whose dynamics are shaped by nonlinear interactions among climatic, demographic, financial, technological, and geopolitical factors. The methodological framework integrates a systems approach, elements of partial and general equilibrium modeling, comparative analysis of international experience, and an assessment of structural concentration in global grain and oilseed markets.The study explores climate-induced shifts in production zones, financialization of agricultural markets, digitalization, and geopolitical fragmentation, highlighting their influence on spatial production patterns, logistics architecture, and price volatility. A transition from a static interpretation of market equilibrium toward a resilience-based paradigm is substantiated, where resilience denotes the capacity of the food system to preserve functionality within an acceptable corridor following external shocks.Special emphasis is placed on the full-scale war as a systemic disruption of global food supply chains. The analysis covers maritime port blockades, destruction of storage and processing infrastructure, crop losses, rising logistics costs, increased financial risks, and declining grain exports. Reduced Ukrainian exports are associated with intensified global price volatility, greater food vulnerability in import-dependent countries, and structural imbalances in the domestic market. Strategic directions for strengthening resilience include diversification of logistics routes, development of reserve transport corridors, enhancement of insurance and financial mechanisms, and integration of digital monitoring and risk management tools, forming a foundation for long-term food security policy under prolonged global instability.