Abstract
This article analyzes the role of the capital of the Republic of Kazakhstan, Astana, in the world political system. Globalization contributes to the emergence of new actors in international relations, among which cities and megacities play a unique role. The issues of the socio-economic development of the city are considered. An overview of the political action was given, and the part of Astana in the system of civilization of international relations was described. The city of Astana was characterized as the center of Eurasian diplomacy. Within the framework of this article, the importance of "urban diplomacy" as an instrument of the system of international relations was also considered. Keywords: city diplomacy, the capital of the Republic of Kazakhstan, twin cities, interconnections, globalization, actors of international relations, regionalization, economy, sustainable development