Proceedings of the International scientific and practical conference ―Cambridge Congress of Advanced Studies‖ (April 3-5, 2026) / Publisher website: www.naukainfo.com. - Cambridge, United Kingdom, 2026. - 350 p.

46 processes and security stability. It is essential to analyze how different regions adapt to contemporary challenges, define their priorities, and interact with the external environment. In this context, particular importance is attached to the comparative analysis of transformations in key world regions: the European Union, which represents an example of a highly integrated and institutionalized system of cooperation; Eastern Europe, where geopolitical tensions and economic difficulties significantly affect regional stability; and the Asia-Pacific region, characterized by rapid economic growth and complex security and environmental issues. The study of the transformation of regional systems in a globalized world makes it possible not only to understand modern integration trends but also to develop scientifically grounded recommendations aimed at improving the effectiveness of regional cooperation and addressing global challenges of the present [2]. The European Union represents a classical example of an integrated regional system of international relations characterized by a high level of economic, political, and social interaction among its member states. Economic integration within the EU is manifested through a common market comprising more than 447 million consumers and a single currency — the euro — which is used by 20 out of the 27 member states. Despite this level of integration, the EU faces a number of global economic challenges, including post-pandemic economic recovery, the energy crisis, and rising inflation. According to Eurostat, inflation in the euro area reached approximately 6.9% in 2023, significantly exceeding the average levels of previous years. At the same time, energy security issues, caused by the reduction of natural gas supplies from Russia, have become one of the key drivers for collective regional decision-making in the energy sector and the transition toward renewable energy sources. In the environmental sphere, the EU actively implements green economy strategies aimed at achieving climate neutrality by 2050. These policies include the development of renewable energy sources, the electrification of transportation, the modernization of industrial processes, and the implementation of sustainable construction standards. For example, the European Green Deal provides for