President Donald Trump has repeatedly argued that the United States remains the world’s dominant military power, citing its unmatched precision strike capabilities, stealth platforms, networked command systems, and advanced weapons technology. On paper, the assessment is difficult to dispute. The U.S. maintains a qualitative edge across air, sea, space, and cyber domains, reinforced by decades of investment in next-generation systems.
Yet a growing number of defense analysts are asking a more uncomfortable question: whether this technological superiority is sustainable in a prolonged high-intensity war, especially one that rapidly consumes precision munitions faster than they can be replaced.
That concern has intensified in the aftermath of a 39-day conflict with Iran, a campaign that military planners have described as operationally successful but strategically revealing. While the United States demonstrated overwhelming battlefield dominance, the conflict exposed what analysts call a structural imbalance between “high-end capability” and “industrial depth.”
The modern American warfighting model is built around rapid, decisive operations—short campaigns that rely on overwhelming first strikes, suppression of enemy defenses, and tightly coordinated air and missile superiority. This approach has proven effective in limited engagements. However, it depends heavily on sustained inventories of advanced munitions that are expensive, complex, and slow to produce.
When operations extend beyond initial expectations, that advantage begins to erode.
Strategic analysts now argue that the Iran conflict illustrates this vulnerability. The U.S. military achieved rapid dominance, but at the cost of significant depletion in critical missile inventories, raising concerns about how long such an approach can be sustained if another crisis emerges simultaneously in Europe or the Indo-Pacific.
A recent assessment by the Center for Strategic and International Studies (CSIS), authored by defense analysts Mark F. Cancian and D.C. Chris H. Park, outlines the scale of munitions expenditure during the conflict and the long timelines required for replenishment.
According to the report, the U.S. entered the Iran campaign with approximately 3,100 Tomahawk Land Attack Cruise Missiles (TLAMs). During the 39-day war, American forces reportedly fired more than 1,000 Tomahawks—roughly one-third of the total inventory. These missiles are central to U.S. long-range strike doctrine, used for early-stage suppression of enemy air defenses and high-value target destruction.
However, production rates lag significantly behind wartime consumption. Over the past decade, annual procurement has averaged fewer than 100 units, while even expanded industrial targets remain constrained by prior underinvestment in surge capacity. CSIS notes that even with increased manufacturing goals, full replenishment of wartime expenditure would take several years.
A similar pattern emerged in missile defense systems.
The war also placed extraordinary pressure on U.S. and allied air defense systems, particularly THAAD and Patriot interceptors. CSIS estimates that before the conflict, the United States held roughly 400 THAAD interceptors, but expended between 190 and 290 during operations defending forward-deployed assets and allied territory.
Production remains limited, with current output estimated at under 100 interceptors per year, although manufacturers such as Lockheed Martin plan to expand capacity substantially. Even under optimistic scenarios, CSIS projects full replenishment would not occur until the end of the decade.
Patriot systems faced similar strain. U.S. inventories of approximately 2,500 interceptors were drawn down by more than 1,000 during the conflict, reflecting the intensity of missile and drone threats in the theater. The advanced PAC-3 MSE variant is currently produced at around 650 units per year, with roughly half allocated to U.S. forces and the remainder to allies.
Although new contracts aim to increase production toward 2,000 units annually, CSIS warns that historical procurement levels are too low to rapidly restore depleted stockpiles. Deliveries from expanded contracts are not expected to fully materialize until the late 2020s.
Beyond ground-based systems, naval and air-launched munitions were also heavily used.
The U.S. Navy’s SM-3 interceptors—designed to destroy ballistic missiles in space—saw significant operational use, with more than half of pre-war inventory reportedly expended. Similarly, SM-6 missiles, which provide dual capability against aerial and surface targets, were also fired in large numbers.
CSIS estimates that replenishment for these systems will take roughly two to three years even under accelerated production, given long industrial lead times and constrained supply chains.
In contrast, some systems performed more sustainably. The Joint Air-to-Surface Standoff Missile (JASSM) stockpile, while heavily used, benefits from a more mature production line. The U.S. Air Force has maintained relatively consistent procurement over the past decade, allowing faster recovery compared with more specialized interceptors.
However, newer systems such as the Precision Strike Missile (PrSM), the successor to the Army Tactical Missile System (ATACMS), remain in early production stages. With fewer than 100 units available before the conflict and dozens expended during operations, inventories remain thin despite planned production increases.
The depletion of munitions has also entered domestic political debate.
Mark Kelly, a retired Navy officer and former astronaut, recently warned in a televised interview that replenishing key missile stocks such as Tomahawks and Patriot interceptors could take years. His comments drew sharp criticism from the Pentagon, with Defense Secretary Pete Hegseth ordering an inquiry into whether classified information had been improperly disclosed.
The dispute underscores a broader tension in Washington between operational transparency, political oversight, and the classification boundaries surrounding munitions inventories.
At the center of the debate is the U.S. defense industrial base, which analysts describe as optimized for peacetime procurement rather than sustained wartime production.
Supply chain bottlenecks in propulsion systems, specialized electronics, energetic materials, and rare components have limited scalability. Labor shortages and long contracting cycles further constrain rapid expansion.
Even where funding exists, production cannot be instantly accelerated. CSIS emphasizes that capacity expansion plans do not automatically translate into immediate output increases, noting that tooling, workforce training, and supplier coordination can take years.
This creates a structural asymmetry: the United States can project overwhelming force quickly, but replacing that force after sustained use is slow.
The implications extend beyond the Iran conflict. Analysts warn that simultaneous contingencies—such as a Taiwan Strait crisis or escalation in Eastern Europe—could stretch U.S. inventories further than current production systems can support.
Allied reliance compounds the issue. Countries such as Poland, Taiwan, and partners in the Middle East depend heavily on U.S. missile defense systems, meaning American stockpile decisions directly affect global deterrence architecture.
In previous years, the United States also diverted Patriot interceptors to support Ukraine, further tightening inventories. While politically necessary at the time, such transfers highlighted the trade-offs inherent in finite stockpiles.
The risk, analysts argue, is not immediate battlefield defeat but strategic constraint: fewer options for sustained operations, slower response times, and reduced deterrence credibility.
The U.S. government has begun responding with expanded procurement targets and long-term production agreements. The Trump administration has proposed a defense budget exceeding $1.5 trillion for FY 2027, with a significant portion directed toward munitions expansion and industrial base modernization.
Framework agreements with defense contractors aim to increase production capacity for key missile systems over the next five to seven years. However, analysts caution that funding commitments alone will not resolve structural limitations quickly.
As CSIS notes, expanded capacity is not the same as actual production. Without sustained multi-year demand signals, supply chains may not fully scale to wartime levels.
The 39-day Iran conflict has not undermined U.S. military superiority. Instead, it has exposed the conditions under which that superiority holds: speed, precision, and limited duration.
The United States remains unmatched in technological capability. But as recent operations suggest, sustained warfare introduces a different equation—one governed not only by sophistication, but by industrial throughput, stockpile resilience, and production speed.
