We are witnessing turbulent times which inspire both anxiety and hope. Many global trends are sweeping across a transforming world. To make these movements and changes more understandable, this book introduces the reader to the study of world politics in a period of rapid readjustment. This book also focuses on world-historical transformations as a general phenomenon, showing how the twenty-first century change in world politics fits into broader patterns of macro-historical change. To do that, the perspective of major international relations theories is utilized, and a discussion of transformation is grounded within a conceptual framework. This book will strengthen the reader's understanding of the trends and transformations in world politics.