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====== Balance of Power ======

Balance of power is a concept in international relations referring to a condition in which no single state or coalition holds sufficient preponderance of power to dominate or dictate terms to all others, with states adjusting alliances and capabilities to prevent such dominance from emerging. The term carries both descriptive and normative meanings - as a description of an observed systemic condition, as a foreign policy strategy pursued by states, and as a prescriptive goal of international order - and the relationship among these usages is itself a matter of scholarly debate. [[balance-of-power-descriptive-vs-normative-debate|See: Descriptive vs. Normative Balance of Power Debate.]]

===== Current State of Knowledge =====

Balance of power remains one of the most studied and contested concepts in international relations theory. Realist scholars generally treat balancing behavior as a predictable response to threats or concentrations of power, arguing that states will align against dominant actors to preserve their autonomy. Liberal and constructivist scholars contest the degree to which this behavior is automatic or structurally determined, pointing to cases of bandwagoning (alignment with the stronger party), buck-passing, and other departures from balancing predictions.

Key empirical disputes include whether states balance against raw power or against perceived threat, whether balancing occurs primarily through internal means (military buildup) or external means (alliance formation), and whether economic interdependence and international institutions modify or override traditional balancing dynamics. The post-Cold War period, in which the United States operated as a unipolar power without a counterbalancing coalition forming among major states, generated substantial debate about whether balance of power theory retains predictive validity under conditions of extreme power asymmetry. [[balance-of-power-unipolarity-debate|See: Unipolarity and Balance of Power Debate.]]

The rise of China and renewed great-power competition between the United States, China, and Russia has revived interest in classical balance of power frameworks, though scholars disagree about whether current dynamics fit historical patterns, represent a novel form of multipolarity, or are better explained by other theoretical frameworks.

===== Consensus Status =====

No broad independent consensus exists on the predictive or prescriptive validity of balance of power theory. Realist, liberal, and constructivist research programs have each produced substantial bodies of work reaching different conclusions, and empirical testing of balancing propositions has yielded mixed results across different historical periods and regional contexts. [[balance-of-power-empirical-record-consensus|See: Empirical Record on Balancing Behavior.]]

There is, however, broad agreement among historians that balance of power reasoning was a significant operational concept in European statecraft from the Peace of Westphalia (1648) through the twentieth century, regardless of whether the behavior it describes is theoretically inevitable.

===== Viewpoints =====

**Classical realism:** States are primarily motivated by the pursuit of power and security; balance of power is a natural and recurring feature of interstate relations, not a designed outcome. Statesmen who ignore it do so at their nation's peril. [[balance-of-power-classical-realist-viewpoint]]

**Structural (neorealism):** The anarchic structure of the international system compels states to balance against concentrations of power regardless of their internal characteristics or leaders' intentions. Balance is a systemic outcome, not a policy choice. [[balance-of-power-structural-realist-viewpoint]]

**Threat-based balancing (balance of threat theory):** States balance against threats rather than against raw power, incorporating factors such as geographic proximity, offensive capability, and perceived aggressive intent. This modification of structural realism better accounts for cases in which states align with the stronger power. [[balance-of-power-threat-based-viewpoint]]

**Liberal institutionalism:** International institutions, economic interdependence, and democratic norms modify or partially substitute for traditional balancing behavior. The balance of power framework underestimates the degree to which rules and institutions can manage great-power competition. [[balance-of-power-liberal-institutionalist-viewpoint]]

**Constructivism:** Balancing behavior is not structurally determined but is shaped by shared ideas, norms, and identities. What counts as a "threat" requiring a balancing response is socially constructed and varies across historical and cultural contexts. [[balance-of-power-constructivist-viewpoint]]

**Hegemonic stability theory:** International order is more stable under a dominant hegemon than under multipolar balance. The effort to prevent preponderance may itself generate instability by leaving no actor capable of enforcing order or providing public goods. [[balance-of-power-hegemonic-stability-viewpoint]]

**Power transition theory:** War is most likely not when power is balanced but when a rising challenger approaches parity with the dominant power. Balance of power models misidentify the danger point in great-power relations. [[balance-of-power-power-transition-viewpoint]]

**Offshore balancing:** Rather than maintaining a large forward military presence, a great power can preserve favorable balances by remaining offshore and intervening only when a hegemon threatens to dominate a key region. Proponents argue this husbands national resources and avoids the blowback generated by permanent overseas commitments. [[offshore-balancing-viewpoint]]

**Collective security as alternative:** Rather than relying on shifting alliances to check aggression, states can commit collectively to respond to any breach of peace, substituting rules-based obligation for ad hoc balancing. Whether collective security complements or competes with balance of power logic is disputed. [[collective-security-viewpoint]]

===== Controversies =====

**Post-Cold War balancing failure:** The absence of a counterbalancing coalition against the United States following the Soviet collapse was cited by numerous scholars as falsifying structural realist predictions, generating an extended methodological and empirical dispute about the theory's scope conditions. [[balance-of-power-post-cold-war-controversy]]

**Concert of Europe interpretation:** Historians dispute whether the post-Napoleonic Concert of Europe (1815-1853) represented a genuine balance of power system, a hegemonic order under British naval supremacy, or an early form of collective security - with significant implications for how each model performed in practice. [[balance-of-power-concert-of-europe-controversy]]

===== Related Pages =====

  * [[balance-of-power-history]] - Historical development from Westphalia through the Cold War
  * [[balance-of-power-descriptive-vs-normative-debate]] - Whether balance of power is a fact, a policy, or a norm
  * [[balance-of-power-unipolarity-debate]] - Does unipolar dominance falsify balancing theory?
  * [[balance-of-power-post-cold-war-controversy]] - The missing counterbalancing coalition
  * [[balance-of-power-concert-of-europe-controversy]] - Competing interpretations of the 1815 settlement
  * [[balance-of-power-classical-realist-viewpoint]]
  * [[balance-of-power-structural-realist-viewpoint]]
  * [[balance-of-power-threat-based-viewpoint]]
  * [[balance-of-power-liberal-institutionalist-viewpoint]]
  * [[balance-of-power-constructivist-viewpoint]]
  * [[balance-of-power-hegemonic-stability-viewpoint]]
  * [[balance-of-power-power-transition-viewpoint]]
  * [[offshore-balancing-viewpoint]]
  * [[collective-security-viewpoint]]
  * [[realism-international-relations]]
  * [[collective-security]]
  * [[polarity-international-relations]]
  * [[hegemonic-stability-theory]]
  * [[power-transition-theory]]
  * [[offshore-balancing]]

===== Footnotes =====

1. Kenneth N. Waltz, //Theory of International Politics// (Reading, MA: Addison-Wesley, 1979), 102-128.
2. Stephen M. Walt, //The Origins of Alliances// (Ithaca: Cornell University Press, 1987), 17-49.
3. John J. Mearsheimer, //The Tragedy of Great Power Politics// (New York: Norton, 2001), 29-54.
4. Robert O. Keohane and Joseph S. Nye, //Power and Interdependence//, 3rd ed. (New York: Longman, 2001), 3-37.
5. Alexander Wendt, //Social Theory of International Politics// (Cambridge: Cambridge University Press, 1999), 246-312.
6. Robert Gilpin, //War and Change in World Politics// (Cambridge: Cambridge University Press, 1981), 29-49.
7. A.F.K. Organski and Jacek Kugler, //The War Ledger// (Chicago: University of Chicago Press, 1980), 13-63.
8. Hedley Bull, //The Anarchical Society: A Study of Order in World Politics// (London: Macmillan, 1977), 97-121.
9. Paul W. Schroeder, "The 19th-Century International System: Changes in the Structure," //World Politics// 39, no. 1 (1986): 1-26.
10. William C. Wohlforth, "The Stability of a Unipolar World," //International Security// 24, no. 1 (1999): 5-41.