Abstract of Argument
This editorial evaluates competing United States grand strategies against established criteria for protecting state interests. It argues that a strategy of “selective engagement,” which focuses American resources on maintaining favorable regional balances through alliances, limited military force, and economic statecraft, is the only strategy that aligns with current structural and domestic constraints.
I. Introduction
The United States currently faces slowing economic growth, rising debt, and polarized politics. These circumstances have prompted a reevaluation of U.S. grand strategy to sustainably pursue critical interests within contemporary economic and political constraints. Competing proposals for a new grand strategy range from strict isolationism to a renewed version of primacy, but these ideas rest on assumptions misaligned with current political conditions and cost-benefit principles. This piece argues that, despite calls for a new doctrine, the United States should maintain the status quo of selective engagement.
II. Theoretical Groundwork
Grand strategy links political objectives to the military, economic, and diplomatic tools used to secure them. Objectives must be clearly defined and efficiently pursued. For example, Barry Posen characterizes grand strategy as a political–military means–ends chain through which a state achieves security.1 The pursuit of “security” through military force must recognize that war is a means to political ends rather than an end in itself.2 These ends must be realized through what theorist Nina Silove describes as plans, principles, and durable patterns of behavior.3
These formulations imply four evaluation criteria: a strategy must identify vital interests, specify the mechanisms required to defend them, align ends with available means, and avoid commitments that cannot be sustained over time. To satisfy these criteria, theorists and policymakers have proposed four competing grand strategies: Restraint, Liberal Internationalism, Primacy, and Selective Engagement.
Each of these grand strategies reflects assumptions derived from major paradigms in international relations theory. Restraint draws from “defensive realism,” arguing that the United States should protect its homeland through limited threats and avoid extensive foreign engagement.4 Liberal Internationalism reflects “institutional liberalism,” treating international rules and economic interdependence as stabilizing forces.5 Primacy incorporates elements of “offensive realism” and “hegemonic stability theory,” which assert that sustained military preponderance is necessary to suppress competition to U.S. power.6 Selective Engagement embodies “structural realism,” identifying where power shifts matter most and concentrating commitments accordingly while avoiding peripheral obligations.7 These paradigmatic assumptions generate different expectations about whether power, institutions, or norms generate stable security outcomes. The core test of any grand strategy is whether these expectations withstand theoretical and empirical scrutiny.
III. Evaluation of the Four Grand Strategies
A. Restraint
Restraint assumes that geography and nuclear deterrence sufficiently insulate the United States from major threats. It suggests that alliances and forward deployments introduce unnecessary liabilities.8 Its causal logic posits that reducing commitments lowers exposure to conflict without compromising homeland security. However, this reasoning misidentifies how regional balances shape global economic and security outcomes relevant to U.S. interests. Regional hegemons can reshape technological standards, production networks, and financial channels in ways that weaken U.S. leverage and limit economic autonomy.9 Rising powers also exploit institutional positions to gain advantages in trade, innovation, and coercive diplomacy.10 Historical evidence indicates that withdrawal accelerates renationalized defense, sharpens nationalism, and intensifies security dilemmas.11 These conditions can lead to arms racing, coercive bargaining, and nuclear proliferation.12 Because these mechanisms undermine essential U.S. interests and cannot be mitigated by geography alone, restraint fails to meet the grand strategic criteria of aligning available means with accurately identified national interests.
B. Liberal Internationalism
Liberal internationalism posits that supranational institutions and economic interdependence can stabilize international politics and reduce conflict.13 Its causal logic suggests that sustained U.S. engagement embeds states in predictable rules and encourages cooperative behavior. However, this mechanism relies on the acceptance of institutional constraints by rising powers and stable domestic support for broad commitments. Neither condition holds today. Major powers increasingly view institutions as tools rather than constraints, complying selectively when rules align with their interests.14 Domestic polarization and economic inequality further weaken support for ambitious international order-building.15 Institutions function reliably only when backed by capable and consistent power, meaning that less domestic support undermines U.S. capacity to sustain institutional commitments.16 Consequently, liberal internationalism fails the tests of feasibility and sustainability, as it depends on political and structural conditions that no longer exist.
C. Primacy
Primacy asserts that sustained U.S. preponderance is essential to deter adversaries and stabilize key regions.17 Its causal logic maintains that forward presence and active regional management prevent the emergence of peer competitors. This approach requires overwhelming material advantage and a stable domestic consensus. These two foundations have eroded as fiscal pressures rise and political support for intervention declines.18 Evidence from attempts at forced democracy promotion, covert regime change, and counterinsurgency indicates that large-scale interventions often fail to produce desired outcomes, instead generating spirals of overextension, coercive backlash, and threat inflation.19 Because primacy demands resources and political cohesion that the United States no longer possesses, it fails the sustainability criterion, even if its strategic aims were desirable.
D. Selective Engagement
Selective engagement posits that only a few regions materially affect the global balance of power.20 Its causal logic holds that outcomes in Europe, East Asia, and the Middle East determine access to technology, industrial capacity, capital, and strategic geography, which underpin U.S. national power.21 Europe and East Asia possess the industrial and technological weight to produce hostile hegemons, while the Middle East influences global markets and chokepoints that, if dominated, could raise costs and reduce maneuverability for the United States. Because dominance in these regions would reshape global economic and security structures, selective engagement concentrates commitments where stakes are highest.
Alliances distribute burdens, deter aggression, and reduce the need for unilateral intervention; many exist by “invitation,” reflecting partner incentives to internalize U.S. leadership.22 Military force is reserved for contingencies where hegemonic outcomes are plausible and justified by clear cost–benefit logic.23 Economic engagement reinforces technological and industrial competitiveness rather than presuming unlimited primacy.24 Avoiding discretionary interventions preserves domestic consensus and prevents strategic drift.25 Selective engagement meets all four evaluation criteria: it accurately identifies vital interests, relies on mechanisms supported by empirical evidence, aligns tools with constraints, and limits commitments to what can be sustained.
IV. Counterarguments and Rebuttals
Common criticisms of selective engagement often misstate its scope or misunderstand its mechanisms. Claims that the strategy lacks clarity overlook the fact that defining vital interests through the risk of hostile regional dominance leads to a narrow and operational set of commitments. Warnings of entrapment in unnecessary affairs ignore the United States’ ability to impose explicit limits on allied commitments and partner behavior.26 Concerns regarding cost-benefit principles fail to consider that stabilizing key regions is less expensive than the long-term consequences of adversarial control over technological standards, supply chains, or financial rules. Assertions that selective engagement weakens deterrence disregard the reality that concentrated commitments produce clearer signals and more credible resolve than diffuse global activism. Therefore, these criticisms do not undermine the strategy’s feasibility or logic.
V. Strategy and Policy Prescription
Selective engagement remains the only viable grand strategy for the United States because it clearly identifies critical interests, aligns available instruments with those interests, and limits commitments to what contemporary economic and political conditions can support. Maintaining this strategy requires four policy choices. The United States must sustain alliances in Europe and East Asia, where power shifts most significantly affect the global balance. It must invest in technological and industrial capacity to ensure long-term competitiveness. It must maintain a military posture focused on deterrence rather than indefinite forward operations, with clear thresholds for the use of force. Finally, it must avoid discretionary interventions that do not impact the global distribution of power. Restraint underestimates the consequences of regional power shifts, while liberal internationalism and primacy overestimate the resources and domestic support available for expansive commitments. Selective engagement alone aligns U.S. objectives with the structural and domestic constraints that define grand strategy today.
- Barry R. Posen, The Sources of Military Doctrine (Ithaca: Cornell University Press, 1984).
- Carl von Clausewitz, On War, trans. Michael Howard and Peter Paret (Princeton: Princeton University Press, 1984), 87–89.
- Nina Silove, “Beyond the Buzzword: The Three Meanings of ‘Grand Strategy,’” Security Studies 27, no. 1 (2018): 27–57.
- Kenneth Waltz, Theory of International Politics (Reading, MA: Addison-Wesley, 1979).
- Robert Keohane, After Hegemony (Princeton: Princeton University Press, 1984).
- John J. Mearsheimer, The Tragedy of Great Power Politics (New York: Norton, 2001).
- Stephen Brooks and William Wohlforth, “American Primacy in Perspective,” Foreign Affairs 81, no. 4 (2002): 20–33.
- Barry Posen, “The Case for a Less Activist Foreign Policy,” Foreign Affairs 92, no. 1 (2013): 116–28.
- Robert Wade, “The Invisible Hand of the American Empire,” Ethics & International Affairs 17, no. 2 (2003): 77–88; Carla Norrlof, America’s Global Advantage (Cambridge: Cambridge University Press, 2010).
- Thomas Christensen, The China Challenge (New York: Norton, 2015).
- A.J.P. Taylor, The Struggle for Mastery in Europe (Oxford: Oxford University Press, 1977); James Joll, The Origins of the First World War, 2nd ed. (London: Longman, 1992); Sebastian Rosato, Europe United (Ithaca: Cornell University Press, 2012).
- Vipin Narang, Nuclear Strategy in the Modern Era (Princeton: Princeton University Press, 2014); Mark Bell, Nuclear Reactions (Ithaca: Cornell University Press, 2021).
- G. John Ikenberry, Liberal Leviathan (Princeton: Princeton University Press, 2011).
- Christensen, China Challenge.
- Martin Gilens and Benjamin Page, “Testing Theories of American Politics,” Perspectives on Politics 12, no. 3 (2014): 564–81; Emmanuel Saez and Gabriel Zucman, The Triumph of Injustice (New York: Norton, 2019).
- John Mearsheimer, “The False Promise of International Institutions,” International Security 19, no. 3 (1994): 5–49; Norrlof, America’s Global Advantage.
- Stephen Brooks, G. John Ikenberry, and William Wohlforth, “Lean Forward,” Foreign Affairs 92, no. 1 (2013): 130–42.
- Benjamin Fordham, “Paying for Global Power,” in The Long War, ed. Andrew Bacevich (New York: Columbia University Press, 2007), 371–404.
- Lindsay O’Rourke, Covert Regime Change (Ithaca: Cornell University Press, 2018); Douglas Porch, Counterinsurgency (Cambridge: Cambridge University Press, 2014); Benjamin Valentino, “The True Costs of Humanitarian Intervention,” Foreign Affairs 90, no. 6 (2011): 60–73; Robert Jervis, American Foreign Policy in a New Era (New York: Routledge, 2005).
- Posen, “Less Activist Foreign Policy.”
- Michael Beckley, Unrivaled (Ithaca: Cornell University Press, 2018); Brooks and Wohlforth, “American Primacy.”
- Geir Lundestad, “Empire by Invitation,” in The United States and Western Europe Since 1945 (Oxford: Oxford University Press, 2003); Ikenberry, Liberal Leviathan.
- Thomas Schelling, Arms and Influence (New Haven: Yale University Press, 1966); Russell Weigley, The American Way of War (Bloomington: Indiana University Press, 1973).
- Diana Mutz, Winners and Losers (Princeton: Princeton University Press, 2021); Angus Deaton, The Great Escape (Princeton: Princeton University Press, 2013); Robert Gordon, The Rise and Fall of American Growth (Princeton: Princeton University Press, 2016).
- Valentino, “True Costs”; Porch, Counterinsurgency.
- Daryl Press, Calculating Credibility (Ithaca: Cornell University Press, 2005).