Forfatterens mål med denne bog er: 1) Analyse af de gældende teorier for international politik og hvad der heri er lagt størst vægt på. 2) Konstruktion af en teori for international politik som kan kan råde bod på de mangler, der er i de nu gældende. 3) Afprøvning af den rekonstruerede teori på faktiske hændelsesforløb.

Kenneth Waltz’s 1979 Theory of International Politics is credited with bringing about a “scientific revolution” in the study of international relations – bringing the field into a new era of systematic study. The book is also a lesson in reasoning carefully and critically. Good reasoning is exemplified by arguments that move systematically, through carefully organised stages, taking into account opposing stances and ideas as they move towards a logical conclusion. Theory of International Politics might be a textbook example of how to go about structuring an argument in this way to produce a watertight case for a particular point of view. Waltz’s book begins by testing and critiquing earlier theories of international relations, showing their strengths and weaknesses, before moving on to argue for his own stance – what has since become known as “neorealism”. His aim was “to construct a theory of international politics that remedies the defects of present theories.” And this is precisely what he did; by showing the shortcomings of the prevalent theories of international relations, Waltz was then able to import insights from sociology to create a more comprehensive and realistic theory that took full account of the strengths of old schemas while also remedying their weaknesses – reasoning out a new theory in the process.

From Theory of International Politics . . . National politics is the realm of authority, of administration, and of law. International politics is the realm of power, of struggle, and of accommodation. . . . States, like people, are insecure in proportion to the extent of their freedom. If freedom is wanted, insecurity must be accepted. Organizations that establish relations of authority and control may increase security as they decrease freedom. If might does not make right, whether among people or states, then some institution or agency has intervened to lift them out of natures realm. The more influential the agency, the stronger the desire to control it becomes. In contrast, units in an anarchic order act for their own sakes and not for the sake of preserving an organization and furthering their fortunes within it. Force is used for ones own interest. In the absence of organization, people or states are free to leave one another alone. Even when they do not do so, they are better able, in the absence of the politics of the organization, to concentrate on the politics of the problem and to aim for a minimum agreement that will permit their separate existence rather than a maximum agreement for the sake of maintaining unity. If might decides, then bloody struggles over right can more easily be avoided.

Kenneth Waltz’s 1979 Theory of International Politics is credited with bringing about a “scientific revolution” in the study of international relations – bringing the field into a new era of systematic study. The book is also a lesson in reasoning carefully and critically. Good reasoning is exemplified by arguments that move systematically, through carefully organised stages, taking into account opposing stances and ideas as they move towards a logical conclusion. Theory of International Politics might be a textbook example of how to go about structuring an argument in this way to produce a watertight case for a particular point of view. Waltz’s book begins by testing and critiquing earlier theories of international relations, showing their strengths and weaknesses, before moving on to argue for his own stance – what has since become known as “neorealism”. His aim was “to construct a theory of international politics that remedies the defects of present theories.” And this is precisely what he did; by showing the shortcomings of the prevalent theories of international relations, Waltz was then able to import insights from sociology to create a more comprehensive and realistic theory that took full account of the strengths of old schemas while also remedying their weaknesses – reasoning out a new theory in the process.

Realism and International Politics brings together the collected essays of Kenneth N. Waltz, one of the most important and influential thinkers of international relations in the second half of the twentieth century. His books Man, the State and War and Theory of International Politics are classics of international relations theory and gave birth to the school of thought known as neo-realism or structural realism, out of which many of the current crop of realist scholars and thinkers has emerged. Waltz frames these seminal pieces in his theoretical development by explaining the context in which they were written and, building on the broader aims of these theories, explains the elusive nature of power balancing in today's international system. It is an essential volume for both students and scholars.

What are the causes of war? How might the world be made more peaceful? In this landmark work of international relations theory, first published in 1959, the eminent realist scholar Kenneth N. Waltz offers a foundational analysis of the nature of conflict between states. He explores works by both classic political philosophers, such as St. Augustine, Hobbes, Kant, and Rousseau, and modern psychologists and anthropologists to discover ideas intended to explain war among states and related prescriptions for peace. Waltz influentially distinguishes among three “images” of the origins of war: those that blame individual leaders or human nature, those rooted in states’ internal composition, and those concerning the structure of the international system. With a foreword by Stephen M. Walt on the legacy and continued relevance of Waltz’s work, this anniversary edition brings new life to a perennial international relations classic.