This book investigates how international organizations have evolved from standard-setting bodies into entities that actively exercise state-like authority and executive power in the international arena. Guy Fiti Sinclair, a scholar of international law and organization, utilizes historical analysis and institutional theory to argue that these organizations have increasingly assumed functions traditionally reserved for sovereign states. By examining the operational shifts of major global institutions, the author provides a framework for understanding the legitimacy and impact of international governance in the modern era.

Scholars and practitioners in international law frequently cite this work for its rigorous examination of the shifting mandates of global institutions. Readers often note the academic density of the prose, which makes it a specialized resource for students and professionals in political science and international relations.