To understand world politics, you need to understand how states think. Are states rational? Much of international relations theory assumes that they are. But many scholars believe that political leaders rarely act rationally. The issue is crucial for both the study and practice of international politics. John J. Mearsheimer and Sebastian Rosato argue that rational decisions in international politics rest on credible theories about how the world works and emerge from deliberative decision‑making processes.

First published in 1981, Lawrence Freedman's The Evolution of Nuclear Strategy was immediately acclaimed as the standard work on the history of attempts to cope militarily and politically with the terrible destructive power of nuclear weapons. It has now been completely rewritten, drawing on a wide range of new research, and updated to take account of the period following the end of the cold war, covering all nuclear powers. 

In this classic work, Huntington challenges old assumptions and ideas on the role of the military in society. Stressing the value of the military outlook for American national policy, Huntington has performed the distinctive task of developing a general theory of civil-military relations and subjecting it to rigorous historical analysis.

The Sino-American contest is driven by clashing geopolitical interests and a stark ideological dispute over whether authoritarianism or democracy will dominate the twenty-first century. But both history and China's current trajectory suggest that this rivalry will reach its moment of maximum danger in the 2020s. The Chinese challenge will most likely prove more manageable than many pessimists currently believe—but during the 2020s, the pace of Sino-American conflict will accelerate, and the prospect of war will be frighteningly real.

In the first book to critically assess the major consequences of space activities from their origins in the 1940s to the present and beyond, Daniel Deudney argues in Dark Skies that the major result of the "Space Age" has been to increase the likelihood of global nuclear war, a fact conveniently obscured by the failure of recognize that nuclear-armed ballistic missiles are inherently space weapons.