Leading analysts have predicted for decades that nuclear weapons would help pacify international politics. The core notion is that countries protected by these fearsome weapons can stop competing so intensely with their adversaries: they can end their arms races, scale back their alliances, and stop jockeying for strategic territory. But rarely have theory and practice been so opposed. Why do international relations in the nuclear age remain so competitive? Indeed, why are today's major geopolitical rivalries intensifying? In The Myth of the Nuclear Revolution, Keir A. Lieber and Daryl G. Press tackle the central puzzle of the nuclear age: the persistence of intense geopolitical competition in the shadow of nuclear weapons. They explain why the Cold War superpowers raced so feverishly against each other; why the creation of "mutual assured destruction" does not ensure peace; and why the rapid technological changes of the 21st century will weaken deterrence in critical hotspots around the world. By explaining how the nuclear revolution falls short, Lieber and Press discover answers to the most pressing questions about deterrence in the coming decades: how much capability is required for a reliable nuclear deterrent, how conventional conflicts may become nuclear wars, and how great care is required now to prevent new technology from ushering in an age of nuclear instability.

'Calculating Credibility' examines - and ultimately rejects - a fundamental belief held by the makers of American foreign policy and laypeople alike: the notion that backing down during a crisis reduces a country's future credibility. Press looks at the decision-making processes behind key events in history.

Calculating Credibility examines and ultimately rejects a fundamental belief held by laypeople and the makers of American foreign policy: the notion that backing down during a crisis reduces a country's future credibility. Fear of diminished credibility motivated America's costly participation in the Korean and Vietnam wars, and, since the end of the Cold War, this concern has continued to guide American policy decisions. Daryl G. Press uses historical evidence, including declassified documents, to answer two crucial questions: When a country backs down in a crisis, does its credibility suffer? How do leaders assess their adversaries' credibility? Press illuminates the decision-making processes behind events such as the crises in Europe that preceded World War II, the superpower showdowns over Berlin in the 1950s and 60s, and the Cuban Missile Crisis. When leaders face the prospect of high-stakes military conflicts, Press shows, they do not assess their adversaries' credibility by peering into their opponents' past and evaluating their history of keeping or breaking commitments. Power and interests in the current crisis not past actions determine the credibility of a threat. Press demonstrates that threats are credible only if backed by sufficient power and only if pursuing important interests. Press believes that Washington's obsession with the dangers of backing down has made U.S. foreign policy unnecessarily rigid. In every competitive environment sports, gambling, warfare competitors use feints and bluffs to tremendous advantage. Understanding the real sources of credibility, Press asserts, would permit a more flexible, and more effective, foreign policy."