Two-volumes: This work advances geopolitical economy as a new approach to understanding the evolution of the capitalist world order and its twenty-first century form of multipolarity. It revives and redeploys the idea of uneven and combined development (UCD) as a way of uniting the understanding of domestic and international developments, and the struggles of classes and nations, into a single perspective as critical to this task. Geopolitical economy, as developed in VOLUME 30A, sheds light on the nature of contemporary international tensions as never before. VOLUME 30B then advances geopolitical economy as a new approach to the study of international relations and international political economy. Following upon the theoretical limitations exposed in Volume A, the analytical limitations are explored in this volume.