In this sobering book, Barry R. Posen demonstrates how the interplay between conventional military operations and nuclear forces could, in conflicts among states armed with both conventional and nuclear weaponry, inadvertently produce pressures for nuclear escalation. Knowledge of these hidden pressures, he believes, may help some future decision maker avoid catastrophe.Building a formidable argument that moves with cumulative force, he details the way in which escalation could occur not by mindless accident, or by deliberate preference for nuclear escalation, but rather as a natural accompaniment of land, naval, or air warfare at the conventional level. Posen bases his analysis on an empirical study of the east-west military competition in Europe during the 1980s, using a conceptual framework drawn from international relations theory, organization theory, and strategic theory.The lessons of his book, however, go well beyond the east-west competition. Since his observations are relevant to all military competitions between states armed with both conventional and nuclear weaponry, his book speaks to some of the problems that attend the proliferation of nuclear weapons in longstanding regional conflicts. Optimism that small and medium nuclear powers can easily achieve "stable" nuclear balances is, he believes, unwarranted.

This sobering book demonstrates how the interplay between conventional military operations and nuclear forces could inadvertently produce pressures for nuclear escalation.

The United States, Barry R. Posen argues in Restraint, has grown incapable of moderating its ambitions in international politics. Since the collapse of Soviet power, it has pursued a grand strategy that he calls "liberal hegemony," one that Posen sees as unnecessary, counterproductive, costly, and wasteful. Written for policymakers and observers alike, Restraint explains precisely why this grand strategy works poorly and then provides a carefully designed alternative grand strategy and an associated military strategy and force structure. In contrast to the failures and unexpected problems that have stemmed from America’s consistent overreaching, Posen makes an urgent argument for restraint in the future use of U.S. military strength. After setting out the political implications of restraint as a guiding principle, Posen sketches the appropriate military forces and posture that would support such a strategy. He works with a deliberately constrained notion of grand strategy and, even more important, of national security (which he defines as including sovereignty, territorial integrity, power position, and safety). His alternative for military strategy, which Posen calls "command of the commons," focuses on protecting U.S. global access through naval, air, and space power, while freeing the United States from most of the relationships that require the permanent stationing of U.S. forces overseas.

Cases of near nuclear use due to misunderstanding demonstrate the importance of the human judgment factor in nuclear decisionmaking. This report applies a risk lens, based on factoring probability and consequence, to a set of cases of near use and instances of sloppy practices from 1962 to 2013.

This book analyzes the evolution of Russian military thought and how Russia's current thinking about war is reflected in recent crises. While other books describe current Russian practice, Oscar Jonsson provides the long view to show how Russian military strategic thinking has developed from the Bolshevik Revolution to the present. He closely examines Russian primary sources including security doctrines and the writings and statements of Russian military theorists and political elites. What Jonsson reveals is that Russia's conception of the very nature of war is now changing, as Russian elites see information warfare and political subversion as the most important ways to conduct contemporary war. Since information warfare and political subversion are below the traditional threshold of armed violence, this has blurred the boundaries between war and peace. Jonsson also finds that Russian leaders have, particularly since 2011/12, considered themselves to be at war with the United States and its allies, albeit with non-violent means. This book provides much needed context and analysis to be able to understand recent Russian interventions in Crimea and eastern Ukraine, how to deter Russia on the eastern borders of NATO, and how the West must also learn to avoid inadvertent escalation.

Barry R. Posen explores how military doctrine takes shape and the role it plays in grand strategy-that collection of military, economic, and political means and ends with which a state attempts to achieve security. Posen isolates three crucial elements of a given strategic doctrine: its offensive, defensive, or deterrent characteristics, its integration of military resources with political aims, and the degree of military or operational innovation it contains. He then examines these components of doctrine from the perspectives of organization theory and balance of power theory, taking into account the influence of technology and geography. Looking at interwar France, Britain, and Germany, Posen challenges each theory to explain the German Blitzkrieg, the British air defense system, and the French Army's defensive doctrine often associated with the Maginot Line. This rigorous comparative study, in which the balance of power theory emerges as the more useful, not only allows us to discover important implications for the study of national strategy today, but also serves to sharpen our understanding of the origins of World War II.

What happens if we bet too heavily on unmanned systems, cyber warfare, and special operations in our defense? In today's U.S. defense policy debates, big land wars are out. Drones, cyber weapons, special forces, and space weapons are in. Accordingly, Pentagon budget cuts have honed in on the army and ground forces: this, after the long wars in Iraq and Afghanistan, seems like an appealing idea. No one really wants American boots on the ground in bloody conflicts abroad. But it is not so easy to simply declare an end to messy land wars. A survey of the world's trouble spots suggests that land warfare has more of a future than many now seem to believe. In The Future of Land Warfare, Michael O'Hanlon offers an analysis of the future of the world's ground forces: Where are large-scale conflicts or other catastrophes most plausible? Which of these could be important enough to require the option of a U.S. military response? And which of these could in turn demand significant numbers of American ground forces in their resolution? O'Hanlon is not predicting or advocating big American roles in such operations—only cautioning against overconfidence that we can and will avoid them. O'Hanlon considers a number of illustrative scenarios in which large conventional forces may be necessary: discouraging Russia from even contemplating attacks against the Baltic states; discouraging China from considering an unfriendly future role on the Korean peninsula; handling an asymmetric threat in the South China Sea with the construction and protection of a number of bases in the Philippines and elsewhere; managing the aftermath of a major and complex humanitarian disaster superimposed on a security crisis—perhaps in South Asia; coping with a severe Ebola outbreak not in the small states of West Africa but in Nigeria, at the same time that country falls further into violence; addressing a further meltdown in security conditions in Central America.

Surveys how American strategic theorists have understood the nature and character of war in the twentieth century.

Cyberspace, where information--and hence serious value--is stored and manipulated, is a tempting target. An attacker could be a person, group, or state and may disrupt or corrupt the systems from which cyberspace is built. When states are involved, it is tempting to compare fights to warfare, but there are important differences. The author addresses these differences and ways the United States protect itself in the face of attack.

Are nuclear weapons useful for coercive diplomacy? This book argues that they are useful for deterrence but not for offensive purposes.