Berlin during the Cold War has been much studied for its lessons about East-West friction and how governments function in managing crises, but less attention has been paid to the effects of successive Berlin crises on relations among the allies concerned. This volume highlights the complex intra-alliance politics of what was seen as the likeliest flash point of conflict in the Cold War and demonstrates how strongly determinant were concerns about relationships with allies in the choices made by all the major governments. It recounts the evolution of policy during the 1958 and 1961 Berlin crises from the perspective of each government central to the crisis, one on the margins and the military headquarters responsible for crafting an agreed Western military campaign. Through a mosaic of the national perspectives, this volume explores the ways in which their similarities and differences affected the course of the Berlin crises as well as the broader framework of alliance relations during the Cold War.