This chapter examines the expansion of three central phenomena associated with liberalism and its emphasis on the potentially peace-promoting effects of domestic and transnational institutions: the spread of democracy throughout most of the world; globalization; and the proliferation of intergovernmental organizations, especially those composed primarily of democratic governments. Each of these assumptions supports and extends the other in a powerful feedback system envisioned by Immanuel Kant. The chapter first considers four major changes in the world over the last century and particularly over recent decades before discussing the ‘epidemiology’ of international conflict. It then explores constraints on war from the perspective of realism vs. liberal institutionalism, whether democracies are peaceful in general, and how order is nurtured within anarchy. It also presents a case study of the European Union and concludes with some reflections on power, hegemony, and liberalism.
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4. Liberalism
Bruce Russett
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9. Marsiglio of Padua
Cary J. Nederman
This chapter examines Marsiglio of Padua's political theory, tracing it to his opposition to the pope's interference in secular political affairs, especially Italy and the Holy Roman Empire. Marsiglio formulates theoretical principles to explain the origins and nature of the political community that depend upon a strict distinction between the temporal and spiritual realms. For Marsiglio, government and law exist in order to support the civil peace. After providing a short biography of Marsiglio, the chapter analyses his views on peace, conciliarism, consent, and ecclesiology. It also considers Marsiglio's claim that all secular governments should oppose the ecclesiastical hierarchy, that political society arises from infirmities of human nature, and that citizenship derives from all vital functions in society.
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7. St Augustine
Jean Bethke Elshtain
This chapter examines Augustine of Hippo's political thought. After providing a brief biography of St Augustine, it considers the fate of his texts within the world of academic political theory and the general suspicion of ‘religious’ thinkers within that world. It then analyses Augustine's understanding of the human person as a bundle of complex desires and emotions as well as the implications of his claim that human sociality is a given and goes all the way down. It also explores Augustine's arguments regarding the interplay of caritas and cupiditas in the moral orientations of persons and of cultures. Finally, it describes Augustine's reflections on the themes of war and peace, locating him as the father of the tradition of ‘just war’ theory.
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4. Strategic Theory
Thomas G. Mahnken
This chapter examines strategic theory and how it provides a conceptual understanding of the nature of war. It begins with a discussion of the logic of strategy and how it applies not only in wartime, but also in peace. It then considers some of the most valuable concepts in strategic theory as articulated by Carl von Clausewitz in On War and compares them with Sun Tzu’s ideas found in The Art of War as well as in the military writings of Mao Zedong and jihadist writers. Clausewitz’s views on war as a ‘paradoxical trinity’—composed of violence, hatred, and enmity—and his understanding of the nature of a war, limited versus unlimited warfare, the rational calculus of war, and friction are explored. The chapter concludes with a commentary on the debate over whether classical strategic theory is obsolete.
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5. The Causes of War
John Garnett and John Baylis
This chapter examines theories that explain the causes of war. It considers ideas advanced by political scientists, sociologists, biologists, and philosophers, showing that different explanations of war give rise to different requirements or conditions for peace. After highlighting the difficulties in studying war, the chapter discusses human nature explanations of war, citing such factors as frustration, misperception, misunderstanding, miscalculation, and errors of judgement as well as the role of human collectives including factions, tribes, nations, and states. It then describes the bargaining model of war before turning to inter-state wars, intra-state conflicts, and ethnic conflicts. It also explores the debate over whether ‘greed’ or ‘grievance’ are the main causes of civil wars. The chapter concludes that identifying a single cause appropriate to all wars is an exercise in futility and that a worldwide ‘just’ peace is unattainable.
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14. War and world politics
Tarak Barkawi
This chapter examines how war fits into the study of international relations and the ways it affects world politics. It begins with an analysis of the work of the leading philosopher of war, Carl von Clausewitz, to highlight the essential nature of war, the main types of war, and the idea of strategy. It then considers some important developments in the history of warfare, both in the West and elsewhere, with particular emphasis on interrelationships between the modern state, armed force, and war in the West and in the global South. Two case studies are presented, one focusing on war and Eurocentrism during the Second World War, and the other on the impact of war on society by looking at France, Vietnam, and the United States. There is also an Opposing Opinions box that asks whether democracy creates peace among states.
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11. Gender and Security
Caroline Kennedy-Pipe and Sophia Dingli
This chapter examines issues of gender and security. It begins with an explanation of what we mean by gender and explains why issues of gender are central to understanding security. International Relations specialists have over the last three decades explored and interpreted the ways in which men and women have responded to the national and international policies which have governed conflict, terrorism, and war. The chapter demonstrates that through understanding and placing notions of gender at the centre of any debate on security one can unleash a series of interlocking understandings of the way men and women relate to insecurity, violence, and war.
