Neorealism or structural realism is a theory of international relations that emphasizes the role of power politics in international relations, sees competition and conflict as enduring features and sees limited potential for cooperation. The anarchic state of the international system means that states cannot be certain of other states' intentions and their security, thus prompting them to engage in power politics.
International relations is an academic discipline. In a broader sense, the study of IR, in addition to multilateral relations, concerns all activities among states—such as war, diplomacy, trade, and foreign policy—as well as relations with and among other international actors, such as intergovernmental organizations (IGOs), international nongovernmental organizations (INGOs), international legal bodies, and multinational corporations (MNCs).
International relations theory is the study of international relations (IR) from a theoretical perspective. It seeks to explain behaviors and outcomes in international politics. The three most prominent schools of thought are realism, liberalism and constructivism. Whereas realism and liberalism make broad and specific predictions about international relations, constructivism and rational choice are methodological approaches that focus on certain types of social explanation for phenomena.
In international relations, the security dilemma is when the increase in one state's security leads other states to fear for their own security. Consequently, security-increasing measures can lead to tensions, escalation or conflict with one or more other parties, producing an outcome which no party truly desires; a political instance of the prisoner's dilemma.
Alexander Wendt is an American political scientist who is one of the core social constructivist researchers in the field of international relations, and a key contributor to quantum social science. Wendt and academics such as Nicholas Onuf, Peter J. Katzenstein, Emanuel Adler, Michael Barnett, Kathryn Sikkink, John Ruggie, Martha Finnemore, Erik Ringmar and others have, within a relatively short period, established constructivism as one of the major schools of thought in the field.
International security is a term which refers to the measures taken by states and international organizations, such as the United Nations, European Union, and others, to ensure mutual survival and safety. These measures include military action and diplomatic agreements such as treaties and conventions. International and national security are invariably linked. International security is national security or state security in the global arena.
Realism, a school of thought in international relations theory, is a theoretical framework that views world politics as an enduring competition among self-interested states vying for power and positioning within an anarchic global system devoid of a centralized authority. It centers on states as rational primary actors navigating a system shaped by power politics, national interest, and a pursuit of security and self-preservation.
Reflectivism is an umbrella label used in International Relations theory for a range of theoretical approaches which oppose rational-choice accounts of social phenomena and positivism generally. The label was popularised by Robert Keohane in his presidential address to the International Studies Association in 1988. The address was entitled "International Institutions: Two Approaches", and contrasted two broad approaches to the study of international institutions. One was "rationalism", the other what Keohane referred to as "reflectivism". Rationalists — including realists, neo-realists, liberals, neo-liberals, and scholars using game-theoretic or expected-utility models — are theorists who adopt the broad theoretical and ontological commitments of rational-choice theory.
In international relations (IR), constructivism is a social theory that asserts that significant aspects of international relations are shaped by ideational factors. The most important ideational factors are those that are collectively held; these collectively held beliefs construct the interests and identities of actors.
In international relations theory, the concept of anarchy is the idea that the world lacks any supreme authority or sovereignty. In an anarchic state, there is no hierarchically superior, coercive power that can resolve disputes, enforce law, or order the system of international politics. In international relations, anarchy is widely accepted as the starting point for international relations theory.
The English School of international relations theory maintains that there is a 'society of states' at the international level, despite the condition of anarchy. The English school stands for the conviction that ideas, rather than simply material capabilities, shape the conduct of international politics, and therefore deserve analysis and critique. In this sense it is similar to constructivism, though the English School has its roots more in world history, international law and political theory, and is more open to normative approaches than is generally the case with constructivism.
Randall L. Schweller is Professor of Political Science at the Ohio State University, where he has taught since 1994. He is a current member of the International Security editorial board and former Editor-in-Chief of the journal Security Studies.
Nicholas Onuf is an American scholar. Onuf is currently Professor Emeritus of International Relations at Florida International University and is on the editorial boards of International Political Sociology, Cooperation and Conflict, and Contexto Internacional. He is a constructivist scholar of international relations. He has been credited with coining the term "Constructivism."
Jennifer Sterling-Folker is a Professor of Political Science at the University of Connecticut. She was the Alan R. Bennett Honors Professor of Political Science. She is a specialist in International Relations theory.
"Anarchy Is What States Make of It: The Social Construction of Power Politics" is a journal article by Alexander Wendt published in International Organization in 1992 that outlines a constructivist approach to international relations theory.
In international relations theory, the Great Debates are a series of disagreements between international relations scholars. Ashworth describes how the discipline of international relations has been heavily influenced by historical narratives and that "no single idea has been more influential" than the notion that there was a debate between utopian and realist thinking.
Classical realism is an international relations theory from the realist school of thought. Realism makes the following assumptions: states are the main actors in the international relations system, there is no supranational international authority, states act in their own self-interest, and states want power for self-preservation. Classical realism differs from other forms of realism in that it places specific emphasis on human nature and domestic politics as the key factor in explaining state behavior and the causes of inter-state conflict. Classical realist theory adopts a pessimistic view of human nature and argues that humans are not inherently benevolent but instead they are self-interested and act out of fear or aggression. Furthermore, it emphasizes that this human nature is reflected by states in international politics due to international anarchy.
The rationalist–constructivist debate is an ontological debate within international relations theory between rationalism and constructivism. In a 1998 article, Christian Reus-Smit and Richard Price suggested that the rationalist–constructivist debate was, or was about to become, the most significant in the discipline of international relations theory. The debate can be seen as to be centered on preference formation, with rationalist theories characterising changes in terms of shifts in capabilities, whereas constructivists focus on preference formation.
Quantum social science is an emerging field of interdisciplinary research which draws parallels between quantum physics and the social sciences. Although there is no settled consensus on a single approach, a unifying theme is that, while the social sciences have long modelled themselves on mechanistic science, they can learn much from quantum ideas such as complementarity and entanglement. Some authors are motivated by quantum mind theories that the brain, and therefore human interactions, are literally based on quantum processes, while others are more interested in taking advantage of the quantum toolkit to simulate social behaviours which elude classical treatment. Quantum ideas have been particularly influential in psychology but are starting to affect other areas such as international relations and diplomacy in what one 2018 paper called a "quantum turn in the social sciences".
J. Samuel Barkin is a Canadian political scientist and a professor of global governance and human security at the University of Massachusetts Boston.
