WASHINGTON — The United States fired more than 800 Tomahawk cruise missiles during the recent conflict with Iran, at a cost of roughly $2.6 million each. Nearly half of its Patriot interceptors were expended, along with 190 to 290 THAAD interceptors priced at $15.5 million apiece. Up to 80 percent of long-range ground-launched precision missiles were also used.
Six weeks of high-intensity operations against a mid-tier adversary have exposed a serious vulnerability: America’s precision munitions stockpiles are thinner than many assumed. The Pentagon is now urgently trying to shift the defense industry onto a wartime footing, even asking companies that normally produce thermostats and electric bus components to help manufacture missile parts.
The numbers paint a sobering picture. Replenishing a single full production run of Tomahawk missiles takes nearly four years under ideal conditions. In reality, experts say the timeline is often longer due to supply chain bottlenecks, skilled labor shortages, and the complexity of modern weapons systems. Similar delays apply to other high-end munitions.
The Scale of Expenditure
Tomahawk missiles are among the most capable long-range strike weapons in the U.S. arsenal, valued for their accuracy and ability to hit heavily defended targets. Using more than 800 in a relatively short campaign represents a significant portion of available inventory. Patriot and THAAD systems, designed primarily for air and missile defense, were also heavily drawn down to counter Iranian drone and missile attacks.
These systems are not easily or quickly replaced. Production lines for advanced missiles require specialized materials, precision engineering, and rigorous testing. Even with increased funding, ramping up output takes time. The current push to involve civilian manufacturers highlights how stretched the traditional defense industrial base has become.
Lessons from War Games
Independent analyses had already warned about this weakness. A CSIS war game simulation of a potential U.S.-China conflict over Taiwan concluded that American long-range anti-ship missiles could be exhausted in as little as three to seven days, with air-to-surface missiles running low within a month. The Heritage Foundation reached a similar conclusion, warning of possible “systemic operational failure” by day 120 in a major Pacific scenario.
The Iran campaign was not on the scale of a peer-level fight against China, yet it still consumed years’ worth of certain munitions in weeks. This has raised uncomfortable questions about sustainability in a future high-intensity conflict against a more capable opponent.
No one is suggesting the United States has been critically weakened to the point of losing a war. However, the rapid depletion sends a clear signal to adversaries. A nation that visibly burns through its most advanced weapons faster than it can replace them may appear more vulnerable than its overall military strength suggests.
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China Watches Closely
Timing adds to the concern. China has just launched its most extensive military drills around Taiwan in years. Beijing has long studied U.S. operations and is well aware of American reliance on precision-guided munitions. The visible strain on U.S. stockpiles could encourage more assertive behavior in the Indo-Pacific if leaders in Beijing believe Washington would struggle to sustain prolonged combat.
This situation also affects allies. Countries that depend on U.S. extended deterrence — from Japan and South Korea to those in the Middle East — are quietly assessing whether America’s arsenal can support multiple commitments at once.
Challenges in the Defense Industrial Base
The scramble to expand production reveals deeper structural problems. Decades of focus on efficiency, just-in-time manufacturing, and peacetime budgets left the defense industry with limited surge capacity. Many critical components rely on single sources or foreign suppliers, creating bottlenecks.
The Pentagon’s effort to bring non-traditional manufacturers into missile production is a short-term workaround, but it comes with risks around quality control and integration. Building true resilience will require sustained investment, new factories, workforce training, and possibly changes in how contracts are structured to encourage companies to maintain extra capacity.
Budget realities add another layer. While Congress has approved supplemental funding for the conflict, long-term replenishment will compete with other national priorities, including domestic programs and preparations for potential threats elsewhere.
What Needs to Change
Defense analysts say the United States must treat its industrial base as a core element of national security, not just another sector of the economy. Recommendations include multi-year procurement contracts, incentives for companies to expand production lines, investment in automated manufacturing, and diversification of supply chains.
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Some progress has already been made in recent years through initiatives aimed at rebuilding munitions stockpiles, but the Iran conflict has shown that current efforts are still insufficient for the pace of modern warfare.
The conflict also underscores a broader strategic reality: precision weapons give the U.S. a qualitative edge, but that edge depends on having enough of them when needed. Quantity still matters, especially when facing adversaries who can absorb losses and keep fighting.
As the Pentagon works to restock its arsenals, the coming months will test whether Washington can translate lessons from the Iran campaign into meaningful industrial reforms. The stakes are high. In an era of great power competition, the ability to sustain combat power over time may prove as important as the weapons themselves.
For now, the rapid expenditure of expensive, high-tech munitions against Iran serves as both a tactical success and a strategic warning. Rebuilding those stockpiles will take years, not months, and America’s adversaries are paying close attention.
