Book excerpt: This book seeks to answer to a central international politics: why do great powers rise and fall? It provides an innovative argument about how domestic political institutions are the key to a state's ability to amass power and influence in the international system. This text also offers a sweeping historical analysis of democratic and autocratic competitors from ancient Greece through the Cold War. This book employs a unique framework to understand and analyze the state of today's competition between the democratic United States and its autocratic competitors, Russia and China.