Cross-border regionalization: the geopolitical dimension

From the standpoint of modern ideas about regionalization, cross-border regions and the activity geospatial interpretation of political geography and geopolitics as directions exploring geopolitical relations, the article considers the content of the geopolitical aspect of cross-border regionalization and emerging regions. It is revealed as a system of cross-border geopolitical relations and regions of various types, due to the diverse properties of interacting entities and the surrounding geospace. The typological differences of geopolitical features of transboundary regions are highlighted. Five types of political foundations and features for classifying geopolitical transboundary regions were identified: according to the status of political borders (international or domestic); by type of cross-border activity; on the legal status (the correlation of regionalization de jure and de facto is discussed); according to historical and geographical features; by complementarity (regions of cooperation or conflict). Four grounds for classifying regions according to their geospatial features are also highlighted: spatial scale (both in topological and metric terms); the specifics of the material environment - territorial, aquatic and others; spatial dynamics of processes; geospatial structure. A total of about forty specific types of cross-border regionalization are described.