Other meanings of Complex interdependence
International Relations Theory
Complex interdependence is a concept in international relations theory developed by Robert Keohane and Joseph Nye in their 1977 book Power and Interdependence. It describes a world in which states are connected by multiple channels—including economic, social, and transnational ties—and where military force is less relevant, while issues are not hierarchically ordered. This framework challenges realist assumptions about the primacy of security and the centrality of state actors.
Complex interdependence is an ideal-type model of world politics that contrasts with realism. It rests on three main assumptions: societies are connected by multiple channels (state-to-state, transnational, and transgovernmental); the agenda of interstate relations is not ordered by a clear hierarchy of issues, with security no longer always dominant; and military force is not used by governments toward one another when complex interdependence prevails.1 These conditions make cooperation more likely and alter the nature of power, shifting from military capabilities to agenda-setting and institutional influence.
Keohane and Nye developed the concept in response to the dominance of realist theory in the 1970s, particularly as economic interdependence grew and transnational actors like multinational corporations gained influence.2 They drew on earlier work on integration and transnational relations, and their book Power and Interdependence became a foundational text of neoliberal institutionalism. The concept was refined in later editions, incorporating critiques and empirical evidence from international political economy.
Complex interdependence has been applied to analyze regional integration, such as the European Union, and to explain cooperation in areas like trade and environmental policy.3 It influenced the study of international regimes and institutions, and remains a key framework in international relations curricula. Critics argue that it underestimates the persistence of military power and the role of domestic politics, but it has been adapted to address these concerns.
Beyond its mainstream use, complex interdependence has been applied to cybersecurity, where non-state actors and economic vulnerabilities blur traditional security boundaries.4 It also informed the concept of 'soft power' developed by Nye, which emphasizes attraction rather than coercion. The model has been used to study the role of international organizations in mediating disputes, and it has been critiqued for its Western-centric assumptions, prompting adaptations in global South contexts.
This entry focuses on the international relations theory sense of complex interdependence.
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