Primacy is a school of US grand strategy holding that the United States should actively maintain its position as the world's preeminent military, economic, and political power. Proponents argue that American dominance over the international order is the principal source of global stability, prosperity, and liberal norms, and that Washington must therefore sustain overwhelming military superiority, defend its alliance networks, and prevent any rival power from achieving regional hegemony. Primacy is associated with scholars and practitioners in the realist and liberal-internationalist traditions, senior officials in successive administrations from both parties, and much of the mainstream foreign-policy community sometimes called the “Blob.”

Primacy advocates argue that the post-1945 and especially post-1991 international order has been unusually peaceful and prosperous precisely because one power has been willing and able to enforce its rules. They draw on hegemonic stability theory-associated with economists and political scientists such as Charles Kindleberger and Robert Gilpin-to contend that international public goods such as freedom of navigation, open trade, and nuclear nonproliferation require a dominant provider. Without American power underwriting these goods, they hold, the system tends toward disorder, arms races, and great-power war.

A central strategic logic of primacy is that the United States must prevent any single state from dominating Europe, East Asia, or the Persian Gulf-the three regions whose combined industrial and resource base could constitute a genuine rival. Advocates argue that a peer hegemon in any of those regions would be able to exclude American commerce, coerce American allies, and ultimately threaten the American homeland. Primacy therefore requires forward-deployed forces, extended deterrence, and alliance commitments that deny rivals the room to consolidate regional dominance.

Primacy advocates contend that America's web of alliances-NATO, the US-Japan and US-South Korea treaties, the Australia-New Zealand-United States arrangement, and various bilateral partnerships-constitutes a unique strategic asset. These alliances extend deterrence to partners who might otherwise pursue independent nuclear programs, host forward bases that reduce response times, and aggregate the economic and military weight of a large share of global GDP. Advocates argue that abandoning or severely curtailing these commitments would trigger destabilizing proliferation and invite regional aggression.

Many primacy advocates, particularly those in the liberal-internationalist tradition, argue that American preponderance has enabled the construction and maintenance of multilateral institutions-the United Nations, the World Trade Organization, the International Monetary Fund, and others-that embed US preferences into international rules and reduce the costs of governance. They contend that a world organized around American primacy is more likely to be hospitable to democracy, human rights, and market economies than one organized around Chinese or Russian power.

Proponents argue that American security guarantees reduce incentives for allies to develop independent nuclear arsenals, which primacy advocates consider a net contributor to nonproliferation. They hold that forward-deployed conventional forces and extended nuclear deterrence are prerequisites for preventing proliferation cascades in Northeast Asia and the Middle East.

Advocates of primacy typically argue that critics underestimate how cheaply the United States has maintained its position relative to historical empires. Defense spending has remained between three and five percent of GDP for most of the post-Cold War period, they note, a figure they consider modest given the scale of the order it sustains. They further contend that the economic returns of openness-access to global markets, dollar reserve-currency status, relatively low energy prices-more than offset the costs of maintaining hegemony.

The intellectual foundations of primacy were laid in the late 1940s as American planners confronted the question of what role the United States should play after its decisive intervention in World War II. NSC-68 (1950), drafted principally by Paul Nitze, articulated an expansive view of American security interests and recommended large, sustained defense expenditures to underwrite a global containment strategy-an early expression of the logic that would mature into primacy.

With the Soviet collapse, a group of defense planners led by Paul Wolfowitz and Scooter Libby drafted the 1992 Defense Planning Guidance, which explicitly called for preventing the emergence of any rival peer competitor and maintaining American military preeminence globally. Though the document was leaked and partially disavowed by the George H.W. Bush administration, its underlying logic became increasingly mainstream through the 1990s.

Academic articulation of primacy accelerated in the same decade. William Wohlforth's influential 1999 article “The Stability of a Unipolar World” argued that American preponderance was so great, and the costs of challenging it so high, that unipolarity was both durable and stabilizing. Stephen Brooks and Wohlforth later extended this argument in World Out of Balance (2008) and America Abroad (2016), providing systematic defenses of deep engagement-a label some scholars prefer to distinguish a rules-and-institutions-focused variant from more coercive expressions of primacy.

The George W. Bush administration's 2002 National Security Strategy, which articulated a doctrine of preemptive war and democratic transformation, represented a more assertive and ideologically freighted variant of primacy. The Iraq War's difficulties prompted considerable internal debate among primacy advocates about the utility of military force for political transformation, but not general abandonment of the underlying commitment to preeminence.

The Obama administration's rhetoric of “nation-building at home” and pivot to Asia was interpreted by some as a modest retrenchment, but its actual defense posture-including continued NATO expansion, the Trans-Pacific Partnership, and active counterterrorism operations across multiple theaters-largely preserved the structural commitments primacy requires. The Biden administration's conduct, including rapid NATO expansion after Russia's 2022 full-scale invasion of Ukraine and intensive alliance-building in the Indo-Pacific, was seen by most analysts as a strong reassertion of primacy's core commitments.

Kristol and Kagan co-founded the Project for the New American Century in 1997 and articulated an influential neoconservative variant of primacy centered on American “benevolent global hegemony” and active promotion of democratic governance. Kagan's later work, including The World America Made (2012) and The Jungle Grows Back (2018), presents a sustained defense of liberal hegemony against both realist restraint and populist nationalism.

Brooks and Wohlforth have produced arguably the most systematic academic defense of deep engagement-a cooperative-institutionalist variant of primacy-arguing that American forward presence and alliance leadership provide public goods that no other power can or will supply, and that the alternatives carry underappreciated risks.

Posen, though himself associated with a restrained form of realism critical of some primacy commitments, has engaged extensively with the primacy literature; his work Restraint (2014) partly defines primacy by contrast.

Brands, of Johns Hopkins University's School of Advanced International Studies, has written extensively in defense of American hegemony, arguing in Making the Unipolar Moment (2016) and later work that sustained strategic engagement is both achievable and necessary.

Rice, as National Security Advisor and Secretary of State under George W. Bush, and Clinton as Secretary of State, represent the practitioner wing; both articulated visions of American leadership in which sustained primacy underwrites multilateral institutions and regional security.

Albright, Secretary of State under President Clinton, offered what became a frequently cited formulation: that the United States is the “indispensable nation” with a unique ability and obligation to lead.

Primacy is not a monolithic doctrine. Significant internal disagreements exist over means, emphasis, and the relationship between American power and liberal values.

Liberal-internationalist advocates such as John Ikenberry argue that American primacy has been legitimate and self-sustaining precisely because it was embedded in multilateral institutions that gave other states a stake in the order. They stress the importance of rules, consultation, and institutional design. More purely realist primacy advocates are skeptical of that account, arguing that institutions matter primarily insofar as they reflect underlying power distributions.

The Iraq War created lasting divisions. Many primacy advocates concluded that military democratization campaigns were counterproductive and that primacy is best preserved through deterrence and alliance management rather than transformational intervention. Others, particularly neoconservatives, maintained that regime character is a genuine security variable and that democratic transformation remains a legitimate instrument.

A major ongoing internal debate concerns how primacy should be applied to China. Some advocates favor comprehensive engagement in competition across all domains; others argue for clearer spheres of influence or selective accommodation on lower-priority issues to conserve resources and reduce the risk of miscalculation. The question of whether Taiwan's defense is a core or peripheral commitment is actively debated within the primacy community.

Some advocates concede that primacy requires a healthy domestic economic base and worry that sustained deficits, infrastructure decay, or social polarization could erode the foundations of American power. This generates debate about the appropriate balance between external commitments and domestic investment.

• US Grand Strategy - Main Topic
• US Grand Strategy Debate
• US Grand Strategy - Restraint Viewpoint
• US Grand Strategy - Offshore Balancing Viewpoint
• US Grand Strategy - Liberal Internationalism Viewpoint
• US Grand Strategy - History
• NATO Expansion Debate
• Hegemonic Stability Theory Debate
• Unipolar Moment Debate

1. William C. Wohlforth, “The Stability of a Unipolar World,” International Security 24, no. 1 (Summer 1999): 5-41. 2. Stephen G. Brooks and William C. Wohlforth, World Out of Balance: International Relations and the Challenge of American Primacy (Princeton, NJ: Princeton University Press, 2008). 3. Stephen G. Brooks and William C. Wohlforth, America Abroad: The United States' Global Role in the 21st Century (New York: Oxford University Press, 2016). 4. Robert Kagan, The World America Made (New York: Alfred A. Knopf, 2012). 5. Robert Kagan, The Jungle Grows Back: America and Our Imperiled World (New York: Alfred A. Knopf, 2018). 6. G. John Ikenberry, Liberal Leviathan: The Origins, Crisis, and Transformation of the American World Order (Princeton, NJ: Princeton University Press, 2011). 7. Hal Brands, Making the Unipolar Moment: U.S. Foreign Policy and the Rise of the Post-Cold War Order (Ithaca, NY: Cornell University Press, 2016). 8. Paul H. Nitze et al., “NSC-68: United States Objectives and Programs for National Security,” April 14, 1950, reprinted in Naval War College Review 27, no. 6 (May-June 1975): 51-108. 9. Patrick E. Tyler, “U.S. Strategy Plan Calls for Insuring No Rivals Develop,” New York Times, March 8, 1992. (On the Wolfowitz/Libby Defense Planning Guidance.) 10. Madeleine Albright, interview on Today, NBC, February 19, 1998, cited in Michael Hirsh, “The Death of a Founding Myth,” Foreign Policy, April 18, 2003. 11. Charles P. Kindleberger, The World in Depression, 1929-1939 (Berkeley: University of California Press, 1973). 12. Robert Gilpin, War and Change in World Politics (Cambridge: Cambridge University Press, 1981). 13. National Security Council, The National Security Strategy of the United States of America (Washington, DC: White House, September 2002).