The War Before the War: Joint Force Integration in Strategic Supply Denial

Introduction

Today’s strategic environment requires a shift in how joint forces contribute to national security. Beyond kinetic operations, modern forces must integrate their actions across the multiple instruments of national power to deny adversaries access to critical resources before they can be weaponized. This approach, called preemptive supply denial, operates in the space between peace and conflict.

Preemptive supply denial prevents an adversary’s access to critical materials, components, or technologies before they can generate military capability or enable coercion. Unlike traditional sanctions that punish past behavior, supply denial operates proactively. It resides at the intersection of intelligence operations, economic statecraft, and diplomatic coordination. We describe the essence of preemptive supply denial in Table one.

We contend that preemptive supply denial becomes a powerful tool for national security when integrated across the diplomatic, information, military, and economic (DIME) elements of national power. It is a strategy especially suited to joint forces. Further, supply denial is well-grounded in the 2025 National Security Strategy of the United States (NSS).

Table One: The Concept of Preemptive Supply Interdiction

Strategic Context: Alignment with the 2025 National Security Strategy

The NSS, released in December 2025, establishes a framework for US strategic security centered on economic security, industrial capacity, and national sovereignty. It recognizes that economic security is fundamental to national security and prioritizes access to critical supply chains. Preemptive supply denial offers a joint force-enabled approach to those objectives.

That alignment occurs through the classic strategy framework of ends, ways, and means. This alignment ensures that preemptive supply denial is pursued not as an isolated tactic but as part of a coherent national strategy.

The end focus of supply denial is maintaining economic preeminence while preventing adversaries from acquiring capabilities that threaten its interests. The strategy states that “the United States must never be dependent on any outside power for core components … necessary to the nation’s defense or economy.” Preemptive supply denial achieves that end by blocking adversary access to critical technologies before they can be used against the US.

The ways of supply denial involve the integrated application of all instruments of national power. The NSS emphasizes working with treaty allies to counteract predatory economic practices and to safeguard the US position in the world economy. Preemptive denial operationalizes this through coordinated export controls, diplomatic engagement, intelligence collection, and military action.

The means are the assets that make denial enforceable. The US and its allies own the firms that are key vendors in various supply chains, thus providing strategic leverage over potential adversaries. The alliance network of the US converts ownership into reach since restrictions bind only when every producer adopts them. Export control and investment screening can transform a policy decision into an enforceable rule. Joint forces add the operational layer, contributing intelligence that maps supply chains, cyber tools that disrupt procurement, and forward presence that creates diplomatic leverage.

Strategic Logic of Preemptive Supply Denial

Preemptive supply denial adapts established concepts of economic warfare to globalized supply chains and advanced manufacturing dependencies. Traditional blockade strategies prevent adversaries from receiving supplies during a conflict. Preemptive denial pushes that concept backward in time. It operates during peacetime and gray-zone competition to prevent adversaries from acquiring capabilities in the first place.

The strategy draws from deterrence theory, specifically deterrence by denial rather than deterrence by punishment. Rather than threatening retaliation, preemptive denial physically prevents adversaries from acquiring threatening capabilities. When China cannot access advanced semiconductor manufacturing equipment, it cannot build the cutting-edge processors that next-generation weapons require. This is a shift from threatening consequences to making hostile action impossible.

This strategy also applies network theory to global supply chains. Modern manufacturing depends on networks with identifiable chokepoints and single points of failure. A small number of firms control critical nodes in semiconductor manufacturing, rare earth processing, advanced machine tools, and specialized chemicals. These features create exploitable vulnerabilities that did not exist in earlier eras of vertically integrated national economies. The concentration of capability in allied democracies amplifies the advantage and produces a weaponized interdependence.

Finally, preemptive denial extends the concept of anticipatory self-defense into the economic domain. International law recognizes that states need not wait until an attack is underway to take defensive measures. This principle emerged in the context of armed attack, but it applies logically where an adversary’s acquisition of a capability would threaten national interests. The question is not whether preemptive action is justified, but how states build that case below the threshold of armed conflict.

Several structural factors suggest that preemptive denial will prove increasingly effective. Advanced manufacturing depends on highly specialized equipment produced by very few firms. When a technology leader can be persuaded not to supply equipment, adversaries face years of domestic development. They also need supplier ecosystems, tacit knowledge, skilled workforces, and quality control that take years to build. This time asymmetry creates windows of strategic advantage that can prove decisive. Denying one critical input often degrades several downstream programs simultaneously.

Joint intelligence capabilities also provide unprecedented visibility into adversary supply chains. Signals intelligence monitors procurement communications and financial transactions. Commercial data from shipping manifests, export licensing applications, and corporate filings reveals material flows. This transparency enables targeting decisions that were impossible in earlier periods. When the United States, European Union, Japan, South Korea, and Taiwan coordinate restrictions, adversaries have few alternative sources. Collective action closes circumvention pathways and magnifies the strategy’s effectiveness. Authoritarian states struggle to replicate these advantages despite massive investment.

Joint Force Mechanisms Across the Competition Continuum

Effective denial requires integration across all instruments of national power, with joint forces in both direct and enabling roles. Activity ranges from passive peacetime collection to armed interdiction during crisis. Table two summarizes the tools available for this strategy.

Table Two. Tools and Mechanisms of Preemptive Supply Denial

Intelligence and Targeting

Comprehensive intelligence on adversary supply chains, dependencies, and acquisition priorities is the foundation of denial. Without it, targeting decisions become arbitrary and effectiveness cannot be assessed. The Defense Intelligence Agency and service intelligence agencies focus on adversary military programs and their input requirements. They identify which technologies and materials are critical to which capabilities. The National Security Agency conducts signals intelligence against procurement networks, monitoring communications, tracking financial flows, and identifying procurement agents. The National Geospatial-Intelligence Agency provides imagery of manufacturing facilities, port operations, and transportation infrastructure. This intelligence feeds targeting that weighs immediate vulnerabilities, second-order effects, substitution possibilities, and adaptation timelines.

Diplomatic and Economic Instruments

Most preemptive denial occurs through diplomatic and economic rather than military means. The State Department coordinates restrictions among technology-controlling states, building coalitions willing to accept economic burdens for geopolitical benefit. This requires sustained engagement with allies who hold different threat perceptions and domestic constraints.

The Commerce and Treasury Departments implement restrictions through export controls, entity lists, and sanctions that create legal barriers to technology transfer. The Committee on Foreign Investment in the United States screens acquisitions that might give adversaries access to critical technologies or supply chains. Such screening prevents indirect acquisition through investment when direct purchase is restricted. These administrative processes are the primary peacetime mechanism of denial.

Military and Cyber Operations

Cyber operations offer additional tools that occupy the contested space between peacetime competition and armed conflict. Under international law, operations that produce physical effects or interfere with critical infrastructure can violate sovereignty, so they require careful legal analysis. Operations that merely collect intelligence or introduce uncertainty fall into gray zones that permit broader action while raising questions about escalation.

Information operations amplify denial by creating uncertainty about supply reliability, quality, or security. When adversaries cannot trust that components will arrive or function as specified, they face planning complications beyond the direct effects of interdiction. This requires coordination among intelligence, military, and diplomatic channels to avoid inadvertent escalation.

In extremis, military capabilities provide options for physical interdiction. Naval forces can interdict shipping, special operations forces can act against facilities, and air and space assets provide surveillance and strike capability. Kinetic operations, however, carry escalation risks and legal complications that make them last-resort options. The more significant military contribution is enabling other instruments through intelligence, planning, and deterrence. Military capability supports diplomacy by demonstrating the potential costs of adversary action. Forward-deployed forces monitor supply chains and provide further kinetic options if diplomacy fails.

Case Studies of Supply Denial

This section discusses three approaches to preemptive supply denial. Each shows both effectiveness and limits. Table three summarizes our discussion.

Table Three. Case Examples of Preemptive Supply Denial

Since 2018, the United States has implemented progressively tighter restrictions on Chinese access to advanced semiconductor manufacturing equipment and design software. Initial restrictions targeted specific entities tied to military applications. Later limitations expanded to technology categories regardless of end user. The Netherlands and Japan coordinated parallel restrictions on their equipment manufacturers, particularly lithography systems.

The Chinese response indicates both the strategy’s effectiveness and adversarial adaptation. Chinese firms remain unable to mass-produce semiconductors below seven nanometers, a gap of roughly five to seven years against Taiwan and South Korea. That gap constrains Chinese artificial intelligence and advanced weapons programs. China has responded with accelerated indigenous development, stockpiling, alternative technologies, and recruitment of foreign talent. This case shows that denial creates windows of advantage rather than permanent solutions. Restrictions hold Chinese capability below what it would otherwise be. They slow progress rather than stop it.

Israel’s 1981 air strike against Iraq’s Osirak nuclear reactor represents the extreme end of the denial spectrum. Kinetic action substituted for diplomatic and economic measures that were judged insufficient against an imminent threat. Israeli aircraft destroyed the facility, setting back Iraqi nuclear development by more than a decade. It arguably prevented Saddam Hussein from possessing nuclear weapons during the 1991 Gulf War. The operation shows that physical destruction can achieve denial when other tools fail, or timelines compress.

The strike also generated diplomatic controversy. The United Nations Security Council condemned it, and questions persist about whether the threat was sufficiently imminent to justify violating Iraqi sovereignty. Scholarship remains divided over what standards should govern anticipatory self-defense. Osirak marks the outer boundary of preemptive denial and shows the diplomatic costs that even successful interdiction generates.

Efforts against Iran combined sanctions, export controls, cyber operations, and covert action over two decades. The Stuxnet computer worm, reportedly deployed by the United States and Israel around 2010, physically damaged centrifuges by exploiting industrial control systems. This cyber-enabled supply chain attack produced physical effects comparable to kinetic strikes while operating below the threshold of armed conflict. Parallel diplomacy secured UN sanctions restricting Iranian access to nuclear materials and dual-use technologies, while US and European measures targeted supporting financial networks.

These integrated efforts delayed Iran’s timeline by years while maintaining deniability. This case also shows the limits of denial absent diplomatic resolution. Restrictions slowed Iranian progress but did not eliminate the program. The Joint Comprehensive Plan of Action of 2015 proved necessary for more durable constraints. The subsequent US withdrawal in 2018 and reimposition of sanctions produced renewed Iranian advances. Denial alone cannot resolve proliferation threats without addressing underlying political motivations.

Implementation Challenges and Limitations

Despite its promise, preemptive supply denial faces legal, operational, strategic, and political challenges. The first is establishing legal foundations for preemptive action below armed conflict thresholds. International law permits self-defense against armed attack and arguably against imminent threats. Extending that argument to economic domains, where threats are diffuse and long-term, remains contested. The Caroline standard requires that necessity be instant and overwhelming, leaving no choice of other means. Restrictions that operate years before a capability materializes cannot easily meet it. Cyber operations can violate sovereignty depending on their effects, and kinetic strikes in third countries clearly cross legal thresholds.

Legitimacy presents a related problem. States must show that their actions address genuine security concerns rather than economic protectionism. But revealing the motivating intelligence compromises collection methods and alerts adversaries to their vulnerabilities. Without legitimacy, denial risks being perceived as economic aggression. That perception undermines alliance relationships and sets precedents adversaries can invoke to justify their own actions.

Coordination among technology-leading democracies is difficult. European states maintain substantial trade with China and are reluctant to jeopardize it to serve primarily US interests. Japan and South Korea sit close to potential adversaries, which shapes their calculations differently than those of distant allies. These divergent interests create enforcement gaps that adversaries exploit through jurisdictional arbitrage. If one ally maintains access while others restrict it, adversaries buy through the weakest link.

Adversaries adapt through indigenous development, supply chain diversification, stockpiling, and technology substitution. As they close vulnerabilities, denial efforts must shift to new targets or accept diminishing returns. Maintaining a strategic advantage requires sustained effort that might not be politically durable, especially as domestic constituencies question the increasing economic costs.

Export restrictions harm domestic industries that lose revenue and market share. Technology firms resist policies that limit business opportunities, arguing that overly broad controls drive customers to foreign competitors while doing little for security. If restrictions accelerate adversary self-sufficiency, they might ultimately strengthen the capabilities they were meant to constrain. Chinese semiconductor investment might not have reached current levels absent US restrictions.

Escalation risk is also real. Adversaries facing capability constraints might conclude that windows are closing, which creates incentives for preventive action. If Chinese leaders believe semiconductor restrictions will permanently block their development, they might decide that military action now is better than accepting future weakness. Cyber operations and covert action add risks of miscalculation. Avoiding escalation requires careful signaling and off-ramps that let adversaries adjust without perceiving an existential threat.

Assessment remains difficult. Adversaries conceal programs, and indigenous development timelines are uncertain. Without clear metrics, policymakers cannot tell whether to maintain, intensify, or abandon a denial strategy.

Discussion and Summary

Preemptive supply denial is a powerful tool for strategic competition in an era of technological interdependence. Modern supply chains create exploitable vulnerabilities through concentration in specialized firms, long development timelines, and allied control of cutting-edge capabilities. Implemented through integrated campaigns, denial can degrade adversary capability and shape strategic behavior in ways traditional deterrence and sanctions cannot.

Success, however, requires comprehensive intelligence, allied coordination despite divergent interests, continuous adaptation, and management of cost and escalation risk. Legal foundations remain contested. Joint forces play essential roles beyond traditional military operations. Intelligence provides the foundation for targeting. Cyber capabilities offer interdiction tools in legal gray zones. Forward-deployed forces monitor adversary activity and reinforce diplomacy.

As technological competition intensifies, preemptive denial will become more important. Chinese semiconductor independence efforts, Russian sanctions circumvention, and proliferation attempts create scenarios where denial offers options that deterrence or diplomacy cannot. The war before the war, the competition over supply chains and technologies, might prove as consequential as the kinetic conflicts it seeks to prevent. Success requires judgment as much as capability, preserving alliance cohesion, international legitimacy, and de-escalation options. The National Security Strategy’s emphasis on integrated deterrence provides the framework for employing joint forces in these efforts.