Implementation of circular and green economy in the context of achieving Sustainable Development Goals and ensuring state’s economic security: the overview of modern concepts

Introduction. The modern world faces numerous challenges related to climate change, limited natural resources, degradation of natural ecosystems, and increasing wastes. The answer to these challenges is the transition from a traditional linear economy to a circular model and green transformation aimed at conserving resources and mitigating the impact of environmental problems. Problem Statement. The introduction of the circular and green economy involves the application of a systematic approach both in the context of achieving the Sustainable Development Goals and ensuring the state's economic security. This makes it expedient to study the theoretical foundations and institutional environment for implementing the principles of circular economy and green transformation, which will allow to form a scientific basis for disseminating these concepts in Ukraine in the context of European integration processes and achieving sustainability. The purpose is to analyze the modern concepts of circular and green economy in the context of achieving the Sustainable Development Goals and ensuring the state's economic security. Methods. The following methods were used:comparative analysis; synthesis and generalization of the data obtained; graphical and tabular methods (to ensure the clarity of the data presentation). Results. The central categories of the concept of sustainable development are the rational use of resources and responsible consumption, which also form the basis for the formation of institutional support for the integration of circular economy principles into the economic life of society. This requires cooperation between the state, businesses, and civil society and finding innovative solutions to ensure economic security. This necessitates a scientific rethinking of existing traditional economic models in the context of sustainability. Conclusions. An important element of the transition mechanism from a linear to a circular economy model in Ukraine in the context of European integration processes is the creation of appropriate institutional support. Adapting the mechanism for implementing the principles of the circular economy and the EU's green transformation in Ukraine requires proper scientific substantiation, which is a promising area for further research.