Despite the fact that there are numerous researches that study corporate social responsibility (CSR), relevant perceptions and the CSR's influence on business performance, very little attention is paid to national specifics, analysis of which would provide more deep understanding of the concept and corresponding interrelations with business performance and, ultimately, with sustainable development processes. In the present research we try to partially overcome mentioned weakness by studying the CSR's state-of-the-art in Poland and Ukraine and providing better insights into these issues. The article contains brief description of the CSR's concept, with the following empirical research as for its importance, different aspects of its perception and its influence on business performance, as well as relevant conclusions.

The article is devoted to the analysis of the possibilities of using circular economy tools. The current state of the circular economy is considered. The article describes the theoretical and practical aspects of the circular economy. An analysis of the basic tools and methods that can be applied in the introduction of the circular economy has been carried out. A chain of creation of added value is proposed. A model of using the circular economy is proposed. The main strategic goals of introducing the circular economy are defined. An additional model is considered - SmartCitiesMarketplace. The possibilities of obtaining benefits from the introduction of the circular economy are considered. Recommendations for further research are given.