Rivalries are a fundamental aspect of all international interactions. The concept of rivalry suggests that historic animosity may be the most fundamental variable in explaining and understanding why states commit international violence against each other. By understanding the historic factors behind the emergence of rivalry, the strategies employed by states to deal with potential threats, and the issues endemic to enemies, this book seeks to understand and predict why states become rivals. The recent increase in the quantitative study of rivalry has largely identified who the rivals are, but not how they form and escalate. Questions about the escalation of rivalry are important if we are to understand the nature of conflictual interactions. This book addresses an important research gap in the field by directly tackling the question of rivalry formation. In addition to making new contributions to the literature, this book will summarize a cohesive model of how all interstate rivalries form by using both quantitative and qualitative methods and sources.

Strategic rivalries are contests between states that view one another as threatening competitors and treat each other as enemies. A disproportionate amount of interstate conflict is generated by a relatively small number of these pairs of states engaged in rivalries that can persist for years. Thus, to understand interstate peace and conflict, it is useful to know how rivalries work in general and more specifically. In the past two decades, a strenuous effort has been mounted to introduce the concept of rivalry and demonstrate its utility in unraveling conflict situations. Yet all rivalries are not exactly alike. We need to move to a more rewarding differentiation of how they differ in general. Principal rivalries are those antagonisms that are most significant to the decision makers in a state. The main distinction on issues about which rivals dispute are positional and spatial concerns. Positional rivalries contend over regional and global influence. Spatial rivals contend over which state deserves to control disputed territory. Interventionary rivalries predominate in sub-Saharan Africa. Their primary focus involves neighboring states attempting to influence who rules and how co-ethnics are treated. This book updates the inventory of strategic rivalries from 1816 to 2020. Principal rivalries are identified for the first time and cover the same period. A theory stressing the two main types of rivalry (positional and spatial) is elaborated and tested. Regional variations on the origins and terminations of spatial rivalry are explored and interpreted. In addition, attention is paid to fluctuations in the intensity of positional rivalries by examining the working of the contemporary major power triangle (United States, Soviet Union/Russia, and China) and, more generally, the dynamics of regional power that are rising in terms of their relative capability and status in the system. Variations in cooperation and termination dynamics both in general and according to rivalry type are also examined. Overall, the emphases of the book are split between demonstrating the utility of distinguishing among rivalry types and examining selected rivalry dynamics.

Rivals – states with acrimonious, militarized histories – often intervene on opposing sides of civil conflicts. These interventions are known to exacerbate and prolong civil wars, but scholars have yet to fully understand why states engage in them, given the significant costs and countervailing strategic interests. Why Rivals Intervene argues that rivals are driven by security considerations at the international level – specifically, the prospect of future confrontations with their rival – to intervene in civil conflicts. Drawing on a theory of rivalry which accounts for this strategic rationale, John Mitton explores three case studies: Indian and Pakistani intervention in Afghanistan, Israeli and Syrian intervention in Lebanon, and US and Soviet intervention in Angola. The book examines a range of evidence, including declassified memoranda, meeting transcripts, government reports, published interviews, memoirs of political leaders, and other evidence of the thought process, rationale, and justifications of relevant decision-makers. The book claims that the imperatives for intervention are consistent across time and space, as rivals are conditioned by a history of conflict to worry about future confrontations. As a result, Why Rivals Intervene illuminates an important driver of civil conflict, with implications for how such conflicts might be solved or mitigated in the future. At the same time, it offers new insight into the nature of long-standing, acrimonious international relationships.

What Do We Know about War? reviews the research on causes of war and the conditions of peace over the past forty-five years. Leading scholars explore the critical roles of territorial disputes, alliances, arms races, rivalry, and nuclear weapons in bringing about war as well as the factors promoting peace, including democracy, norms, stable borders, and capitalist economies. Considering what has been learned about the causes of war and the conditions of peace in the ten years since the publication of the first edition, this invaluable text offers an accessible and up-to-date overview of current knowledge and an agenda for future research. Contributions by: Brett V. Benson, Paul F. Diehl, Colin Flint, Daniel S. Geller, Douglas M. Gibler, Gary Goertz, Paul R. Hensel, Choong-Nam Kang, Jack S. Levy, Zeev Maoz, Sara McLaughlin Mitchell, Michael Mousseau, Karen Rasler, Susan G. Sample, William R. Thompson, Brandon Valeriano, John A. Vasquez, and Peter Wallensteen.

In a very short time, individuals and companies have harnessed cyberspace to create new industries, a vibrant social space, and a new economic sphere that are intertwined with our everyday lives. At the same time, individuals, subnational groups, and governments are using cyberspace to advance interests through malicious activity. Terrorists recruit, train, and target through the Internet, hackers steal data, and intelligence services conduct espionage. Still, the vast majority of cyberspace is civilian space used by individuals, businesses, and governments for legitimate purposes. Cyberspace and National Security brings together scholars, policy analysts, and information technology executives to examine current and future threats to cyberspace. They discuss various approaches to advance and defend national interests, contrast the US approach with European, Russian, and Chinese approaches, and offer new ways and means to defend interests in cyberspace and develop offensive capabilities to compete there. Policymakers and strategists will find this book to be an invaluable resource in their efforts to ensure national security and answer concerns about future cyberwarfare.

What explains the ebb and flow of the Sino-Japanese rivalry? Why do the two states sometimes choose to escalate or de-escalate the rivalry? Does domestic politics play a role? Examining the historic and contemporary relationship between China and Japan through the lens of the interstate rivalry literature, Streich analyzes two periods of Sino-Japanese rivalry and the reasons for their ever-changing nature. He looks both at how rivalry theory can help us to understand the relationship between the two countries and how this relationship can in turn inform rivalry theory. His results find that domestic politics and expected costs play a large role in determining when each state decides when to escalate, de-escalate, or maintain the status quo. This book is an essential guide to understanding the historical development and contemporary status of the Sino-Japanese rivalry.

Now in a thoroughly revised and updated edition, this classic text presents a comprehensive survey of the many alternative theories that attempt to explain the causes of interstate war. For each theory, Greg Cashman examines the arguments and counterarguments, considers the empirical evidence and counterevidence generated by social-science research, looks at historical applications of the theory, and discusses the theory’s implications for restraining international violence. Among the questions he explores are: Are humans aggressive by nature? Do individual differences among leaders matter? How might poor decision making procedures lead to war? Why do leaders engage in seemingly risky and irrational policies that end in war? Why do states with internal conflicts seem to become entangled in wars with their neighbors? What roles do nationalism and ethnicity play in international conflict? What kinds of countries are most likely to become involved in war? Why have certain pairs of countries been particularly war-prone over the centuries? Can strong states deter war? Can we find any patterns in the way that war breaks out? How do balances of power or changes in balances of power make war more likely? Do social scientists currently have an answer to the question of what causes war? Cashman examines theories of war at the individual, substate, nation-state, dyadic, and international systems level of analysis. Written in a clear and accessible style, this interdisciplinary text will be essential reading for all students of international relations.

Shocks and Rivalries in the Middle East and North Africa is the first book to examine issue-driven antagonisms within groups of Middle East and North Africa (MENA) states and their impact on relations within the region. The volume also considers how shock events, such as internal revolts and regional wars, can alter interstate tensions and the trajectory of conflict. MENA has experienced more internal rivalries than any other region, making a detailed analysis vital to understanding the region’s complex political, cultural, and economic history. The state groupings studied in this volume include Israel and Iran; Iran and Saudi Arabia; Iran and Turkey; Iran, Iraq, and Syria; Egypt and Saudi Arabia; and Algeria and Morocco. Essays are theoretically driven, breaking the MENA region down into a collection of systems that exemplify how state and nonstate actors interact around certain issues. Through this approach, contributors shed rare light on the origins, persistence, escalation, and resolution of MENA rivalries and trace significant patterns of regional change. Shocks and Rivalries in the Middle East and North Africa makes a major contribution to scholarship on MENA antagonisms. It not only addresses an understudied phenomenon in the international relations of the MENA region, it also expands our knowledge of rivalry dynamics in global politics.

International conflict is neither random nor inexplicable. It is highly structured by antagonisms between a relatively small set of states that regard each other as rivals. Examining the 173 strategic rivalries in operation throughout the nineteenth and twentieth centuries, this book identifies the differences rivalries make in the probability of conflict escalation and analyzes how they interact with serial crises, arms races, alliances and capability advantages. The authors distinguish between rivalries concerning territorial disagreement (space) and rivalries concerning status and influence (position) and show how each leads to markedly different patterns of conflict escalation. They argue that rivals are more likely to engage in international conflict with their antagonists than non-rival pairs of states and conclude with an assessment of whether we can expect democratic peace, economic development and economic interdependence to constrain rivalry-induced conflict.