The agricultural sector is one of the leading ones in the economy of many countries, as it creates the basis for their economic growth. Every region in every country has its own unique sphere of social reproduction due to different resource potential, i.e., fertile soils, favourable climatic conditions, etc. Under such conditions, it is irrelevant to choose a single development path for this sector. Given these facts, the study formulates development strategies for regional agricultural development of the country. In particular, we grouped regions into clusters according to the level of development of crop production and stockbreeding potential, as well as investment attractiveness. The method of cluster analysis was used to group regions by the level of capacity development, whilst the matrix method was used to formulate a matrix for choice of the strategy to improve the agricultural potential of regions. On the basis of the conducted analysis, the 3D matrix for the choice of investment strategy of the regional agricultural development of the country depending on the level of development of crop production and stockbreeding potential and investment attractiveness was constructed.

The circular economy (CE) is generally an economic system which aims to reduce waste and reuse resources. Predetermined by the need for new sources of sustainable development in the current conditions of global environmental issues and qualitative and quantitative limitations of resources, this promising concept has recently fuelled a broad international discussion. The circular economy is now an urgent global priority for policymakers as well, especially in the EU.Given these facts, the benefits and impact of a circular economy with an emphasis on waste and recycling management are being investigated on supranational and national levels (in the EU and its member nations, which are world leaders in terms of its adoption). Systematisation, comparative analysis, benchmarking and generalisation, economic and mathematical modelling (the formation of a model of recycling efficiency in the context of the CE in the EU based on the Eurostat data on the CE in the EU) and statistical methods were the research methods used in the study. It was proven that waste recycling rates have a significant impact on the EU recyclable raw materials trade. The proposed methodology of modelling the CE results can be used for other countries/companies. The research may help to promote effective reformation of global economics by propelling sustainable development.

This study analyzes the impact of social, ecological, and economic components on achieving Sustainable Development Goals (SDGs) in seven selected countries for the period 2000–2022 (Australia, Canada, Germany, the Netherlands, Switzerland, the United Kingdom, the United States). Using data from the Sustainable Development Reports 2017, 2019, and 2023, a correlation and regression analysis was conducted to assess the relationships between the components and the SDG Index. The results demonstrate a strong positive relationship between social, ecological, and economic factors and progress towards achieving the SDGs, with variations between countries. The study revealed the limitations of aggregated data analysis that negatively affect the implementation of the planning function. The research highlighted the importance of a country-by-country approach in assessing sustainable development progress. The results underscore the importance of developing tailored strategies for achieving the SDGs, which are sensitive to each country’s specific conditions, strengths, and weaknesses in different aspects of sustainability. These conclusions are important for the shaping of policies and strategic planning for achieving the SDGs.

The circular economy is a prerequisite for the new industrial revolution, because it contributes to achieving maximum economic efficiency in industry and reducing the negative impact on the environment. Its implementation involves a set of measures aimed at the sustainable development of enterprises, the country and society. Introducing the concept of circular economy is an important and necessary step for the development of our country, its integration into the European Union and post-war recovery. The purpose of the study is to identify problems on the path of reorientation of Ukrainian enterprises to the principles of circularity and sustainable development and to develop methods for their rapid adaptation, in particular, taking into account the consequences of European integration and full-scale war. The goals of the research: analysis of the current state of waste management in Ukraine, clarification of the essence and key principles of circularity and sustainable development, identification of the main strategies for the implementation of the circular economy, analysis of the peculiarities of the implementation of circular business models in Ukraine, taking into account the experience of the EU, development of recommendations for rapid adaptation circular business models in conditions of war. The peculiarities of waste management in Ukraine, in particular in the conditions of war, the readiness of companies and resource provision for the introduction of new circular business models are analyzed. The advantages and weaknesses of the implementation of circular principles, the opportunities that open up to enterprises, the positive impact on the economic, social, technological spheres, etc. are characterized. Before the full-scale invasion into Ukraine, most of the factors of the external environment were generally favorable for the implementation of circular economy business models by Ukrainian enterprises: accelerated accession to the EU, commitment to Ukrainian business in the world market, attraction of foreign investments, development of innovative technologies in Ukraine, gradual change in the culture of consumption , increasing consumer trust in "green" brands, increasing the level of social responsibility of enterprises. The amount of waste in Ukraine as a result of military operations as of June 2023 was 12 million tons (excluding temporarily occupied territories): destruction of administrative buildings, private houses, agricultural lands, etc. At the same time, it was stated that the pre-war methods of waste management, which were already ineffective, cannot be used in principle today. Therefore, now more than ever, it is important to promptly and effectively eliminate its consequences, which, on the other hand, is also a potential for the development of the circular economy and the post-war reconstruction of Ukraine.

Within the framework of a model describing real-functioning association of three enterprises, numerical calculations of economic dynamics parameters considering fluctuating market demand for the goods were performed. A methodology was suggested for approximated consideration of both seasonal and random demand fluctuations at the market of textile garments; the main steps of the suggested methodology were described. The main exogenous random factors within this model include, as stated above, the volume of market demand for the goods produced by the enterprises of the group. The basic volume of market demand is considered at the average actual level according to the results of the enterprises’ analysis, and additionally we take into account the influence of non-price factors, such as random changes in the consumers’ tastes, consumers’ income, and other random factors on the market demand. By volume of market demand, we consider the total amount of goods produced by the enterprises of the group that all consumers are willing and able to purchase at a specific price in a marketplace. The calculations were made based on actual values of external economic parameters, such as labor cost, product prices, etc. Influence of the market demand fluctuations on the companies’ activity has been illustrated both numerically and graphically, allowing the analysis of the impact of exogenous parameters on the companies output and profits. The suggested approach creates a basis for further analysis of the impact of random factors of a similar nature, i.e., stochastic shocks related to the level of interest rates, shifts and turnabouts in the social environment, as well as the market transformations due to annual/seasonal epidemics.

The circular economy is a prerequisite for the new industrial revolution, because it contributes to achieving maximum economic efficiency in industry and reducing the negative impact on the environment. Its implementation involves a set of measures aimed at the sustainable development of enterprises, the country and society. Introducing the concept of circular economy is an important and necessary step for the development of our country, its integration into the European Union and post-war recovery. The purpose of the study is to identify problems on the path of reorientation of Ukrainian enterprises to the principles of circularity and sustainable development and to develop methods for their rapid adaptation, in particular, taking into account the consequences of European integration and full- scale war. The goals of the research: analysis of the current state of waste management in Ukraine, clarification of the essence and key principles of circularity and sustainable development, identification of the main strategies for the implementation of the circular economy, analysis of the peculiarities of the implementation of circular business models in Ukraine, taking into account the experience of the EU, development of recommendations for rapid adaptation circular business models in conditions of war. The peculiarities of waste management in Ukraine, in particular in the conditions of war, the readiness of companies and resource provision for the introduction of new circular business models are analyzed. The advantages and weaknesses of the implementation of circular principles, the opportunities that open up to enterprises, the positive impact on the economic, social, technological spheres, etc. are characterized. Before the full-scale invasion into Ukraine, most of the factors of the external environment were generally favorable for the implementation of circular economy business models by Ukrainian enterprises: accelerated accession to the EU, commitment to Ukrainian business in the world market, attraction of foreign investments, development of innovative technologies in Ukraine, gradual change in the culture of consumption, increasing consumer trust in “green” brands, increasing the level of social responsibility of enterprises. The amount of waste in Ukraine as a result of military operations as of June 2023 was 12 million tons (excluding temporarily occupied territories): destruction of admini- strative buildings, private houses, agricultural lands, etc. At the same time, it was stated that the pre- war methods of waste management, which were already ineffective, cannot be used in principle today. Therefore, now more than ever, it is important to promptly and effectively eliminate its consequences, which, on the other hand, is also a potential for the development of the circular economy and the post-war reconstruction of Ukraine.