14. Green Theory

This chapter examines how environmental concerns have influenced International Relations theory. It first provides a brief overview of the ecological crisis and the emergence of green theorizing in the social sciences and humanities in general, along with the status and impact of environmental issues and green thinking in IR theory. It then investigates green theory’s transnational turn and how it has become more global, while critical IR theory has become increasingly green. It also considers the different ways in which environmental issues have influenced the evolution of traditional IR theory. It concludes with a case study of climate change to illustrate the diversity of theoretical approaches, including the distinctiveness of green theories.

Introduction: Diversity and Disciplinarity in International Relations Theory

This text argues that theory is central to explaining International Relations (IR) and that the discipline of IR is much more relevant to the world of international relations than it has been at any point in its history. Some chapters cover distinct IR theories ranging from realism/structural realism to liberalism/neoliberalism, the English school, constructivism, Marxism, critical theory, feminism, poststructuralism, green theory, and postcolonialism. Oher chapters explore International Relations theory and its relationship to social science, normative theory, globalization, and the discipline’s identity. This introduction explains why this edition has chosen to cover these theories, reflects on international theory and its relationship to the world, and considers the kind of assumptions about theory that underlie each of the approaches.

9. Constructivism

This chapter examines the key debates that have shaped the development of constructivism in International Relations (IR). It first considers the idea that international relations is a social construction, as it emerged from the critique of more traditional theories of IR. It then explores the distinctions among various constructivisms, with particular emphasis on the contrast between those who seek a ‘better’ social science, and hence better theory, versus those who argue that constructivism is an approach that rests on assumptions at odds with those of positivist method. The chapter proceeds by discussing constructivists’ critique of rationalism, along with constructivism as a ‘middle ground’ between rationalist and poststructuralist approaches to IR. It also analyses the role of language and causality in the debate between rationalists and constructivists. Finally, it links all these insights to the War on Terror and the war on Covid-19.

13. Normative International Relations Theory

This chapter deals with normative international relations theory, a field of study that relies on a variety of approaches and theories to explore moral expectations, decisions, and dilemmas in world politics. Normative IR theory has adopted—and adapted—conceptual categories such as communitarianism and cosmopolitanism from political theory. It also borrows from moral philosophy to designate different types of ethical reasoning, such as deontology and consequentialism. The chapter begins with an overview of the history, influences, and some of the categories that normative IR theory brings to the study of international relations. It then examines the ways in which normative IR theory engages with the hidden ethical assumptions of a range of IR approaches. The case study considers the ethics of war in the Iraq war.

5. Neoliberalism

This chapter examines the neoliberalist argument that international institutions promote international cooperation. While neoliberalism acknowledges that cooperation can be difficult to achieve in anarchic conditions, it insists that institutions allow states to overcome a variety of collective action impediments. The central concern of neoliberal analysis is how institutions do so, and how they might be redesigned to more efficiently obtain cooperative outcomes. This chapter considers three questions that are relevant for understanding neoliberal contributions: How did neoliberalism emerge? What are the barriers to international cooperation? How does neoliberalism study international institutions? The chapter uses the World Trade Organization as a case study to illustrate the importance of institutional design for international free trade cooperation. Along the way, various concepts such as interdependence, hegemonic stability, hegemon, bargaining, defection, compliance, autonomy, and principal–agent theory are discussed, along with the game known as Prisoner’s Dilemma.

7. Marxism

This chapter examines Marxist theory’s understanding of capitalism as an historically particular way of organizing social life and how Marxism can shed light on complex social relationships through which human beings produce and reproduce their social relations, the natural world, and themselves. It argues that the kind of social organization envisioned by Marxists has political, cultural, and economic dimensions that must be viewed as a dynamic ensemble of social relations not necessarily contained within the territorial boundaries of nation-states. The chapter first provides an overview of historical materialism and the meaning of dialectical theory, with particular emphasis on Karl Marx’s critique of capitalism and the Marxist tradition’s theorizing of imperialism, before discussing Western Marxism and Antonio Gramsci’s theory of hegemony. It then considers Marxist concepts of global power and hegemony and concludes with a case study that highlights the social relations underlying US global militarism.

15. International Relations Theory and Globalization

This chapter examines the existing debate on the extent and nature of globalization and its implications for contemporary International Relations theory. It first considers the stakes involved in the globalization debate for a range of core theoretical perspectives in IR. It shows how the literature on globalization has developed over time, revealing how the nature of the debate has changed, and illustrates this both theoretically and empirically with a case study of the impact of globalization on the development of the welfare state before and since the global financial crisis. The chapter also considers the empirical case against the globalization thesis, what a competition state is, and how it might confer a competitive advantage upon a national economy in an era of globalization. The chapter suggests that the current level of interdependence within the international system, although considerable, is not easily reconciled with the stronger variants of the globalization thesis.

3. Structural Realism

This chapter examines why states pursue power from the perspective of structural realism. It considers a body of realist theories that argue that states have deep concern for the balance of power and compete among themselves either to gain power at the expense of others, or at least to make sure they do not lose power. This competition for power makes for a dangerous world where states sometimes fight each other. There are, however, important differences among structural realists. The chapter first explains why states want power and how much power they want before discussing the causes of war. These theoretical issues are illuminated with a case study that assesses whether China can rise peacefully according to offensive realism vs. defensive realism. Along the way, concepts such as the security dilemma, offence–defence balance, central war, buck-passing, unipolarity, bipolarity, and multipolarity, and deterrence are analysed.

8. Critical Theory

This chapter examines the various assumptions of critical theory espoused by the Frankfurt school, with particular emphasis on how the Frankfurt school’s critiques of authoritarianism and repression influenced the critical interventions by International Relations (IR) theorists. The chapter focuses on two major strands of critical International Relations theory: normative theory and the Marxist-based critique of the political economy. After providing an overview of the Frankfurt school and critical IR theory, the chapter explores critical theorists’ views on universal morality and political economy. It then discusses Jürgen Habermas’s ideas in international relations and presents a case study of the Arab Spring. It concludes by analysing the concept of critical reflexivity and how it can show knowledge and social reality are co-produced through social interaction, and how this interaction can, in turn, produce practical or empirical knowledge of the changing moral and legal dynamics of prominent global institutions.

12. Postcolonialism

This chapter examines postcolonial approaches to International Relations (IR) and their foregrounding of the history and politics of colonialism in the making of the modern world. It first considers the concerns, issues, and preoccupations highlighted by postcolonial theory, along with some of the central debates that have shaped its intellectual terrain, and the normative and political commitments that distinguish it from other related fields such as Marxism and poststructuralism. It then discusses the relevance of postcolonialism to the study of international relations and proposes three different ways of engaging with the insights of postcolonial theory within IR that open up new questions, alternative methodologies, and a range of possibilities for narrating a postcolonial IR. Finally, it analyses international concerns about Iran’s nuclear weapons programme from a postcolonial perspective.