ТРАНСФОРМАЦІЙНІ ЗМІНИ В ЛОГІСТИЦІ: ОЦІНКА ВПЛИВУ ГЕОПОЛІТИЧНИХ ТА КЛІМАТИЧНИХ ЧИННИКІВ НА СТІЙКІСТЬ ЛАНЦЮГІВ ПОСТАЧАНЬ

Objective. The purpose of the article is to conduct a comprehensive analysis of key factors affecting the sustainability of modern supply chains, as well as to develop a conceptual and analytical model of the MISCSI integrated index, which will allow identifying areas for improving the sustainability and adaptability of supply chains in the context of geopolitical, energy, climate, and technological changes. Methodology. The methodological basis of the study was formed by methods of system analysis, integral method, modeling, coefficient analysis, comparative analysis of global logistics practices, the method of generalization and interpretation of data from international analytical reports, as well as analysis of scientific publications by Ukrainian and foreign researchers. Results. The article identifies five groups of factors that determine the resilience of supply chains: geopolitical conflicts and transformations, climate and energy challenges, the development of ‘green’ logistics, the consequences of pandemics and the evolution of supply models, as well as technological changes in the direction of Smart Logistics. Based on these, the author has developed a conceptual and analytical model of the MISCSI integrated supply chain sustainability index, identifying five key sustainability blocks: operational, financial, climate and environmental, logistical flexibility, and geopolitical adaptability. Calculation formulas for each component of the proposed model are provided. It is shown that after the start of full-scale war in Ukraine, logistics routes underwent a sharp transformation, but the industry was able to adapt by forming alternative export routes. The impact of climate anomalies and energy crises on transportation costs is revealed, and the growing role of innovative technologies such as blockchain, IoT, and automated route optimization systems is analyzed. The scientific novelty lies in an integrated approach to interpreting the sustainability of supply chains as a multifactorial system that responds to global changes through the simultaneous transformation of logistics models, infrastructure, and technologies. A model of the MISCSI integrated supply chain resilience index has been developed, which will allow supply chains to be characterized based on the MISCSI value obtained. Interpretation of the results of the integral index calculation will allow determining the state of the logistics system as highly vulnerable to shocks, having limited adaptability, resistant to most risks, or the company's logistics system having high adaptability and flexibility. A generalized concept of the interdependence of crisis factors and adaptive strategies of logistics systems has been formed. The practical significance of the study lies in the formation of conceptual and analytical recommendations that can be used by logistics operators, manufacturing enterprises, and government agencies to improve their preparedness for crisis situations, develop route diversification strategies, implementing green solutions and digital technologies that increase the resilience of the logistics system and reduce the risks of global disruptions in supply chains.