This work investigates the diplomatic failures and geopolitical shifts that defined the interwar period between the conclusion of the First World War and the outbreak of the Second World War. G. M. Gathorne-Hardy, a noted scholar of international relations, utilizes his expertise to analyze the League of Nations, the collapse of collective security, and the rising tensions in Europe and Asia. The text provides a structured examination of how post-war treaties and national interests intersected to destabilize the global order.

Historians and scholars of international relations frequently cite this work as a foundational, contemporary account of the interwar period. Readers often note the academic density of the prose and the author's focus on the structural failures of international institutions.