Theoretical and practical views of political integration in Central and Eastern Europe

The objective of the work was to analyze integration theories such as federalism, functionalism, neofunctionalism, the multilevel governance model and the interstate concept. Using the systemic-integral method, we analyze the main interpretations of modern integration models. The study also used special methods typical of international relations theory. The interstate concept is the most effective, because without denying the importance of integration, it focuses on the preservation of cultural and economic diversity. The experience of Poland, the Czech Republic, and the Baltic States, in particular Latvia, is a valuable integrating example for Ukraine. The results summarize that the countries analyzed received several advantages for the economic and military spheres through integration processes. It is concluded that in the experience of integration of the Balkans and the central-eastern countries, the importance of European integration processes is evident. The comparison of Ukraine and Latvia showed the importance of being a member of the North Atlantic Alliance for security guarantees and political consolidation. At the same time, the Czech Republic's accession to NATO has contributed to the reform and modernization of military affairs.