During the course, we will deal with the phenonemon of regionalism in a historical and theoretical perspective with a focus on the role of regionalism in the world politics. Starting with the basic conceptualization of region, regionalism, regionalization, or globalism, the course explains historical eras, waves of economic and political integration, theoretical explanations of driving forces behind regional integration. Further regional groupings are analyzed along with a possible classification of integration processes in the world. Particular attention is paid to the specific features of intrastate, inter-state and transnational regions. The second part of the course is mainly focused on the regionalism in Europe, Asia, Americas, Africa and Australia.