The Iran War Exposed a Larger Problem

The United States can win battles faster than it can replace the weapons, aircraft capacity and trained personnel consumed by a prolonged conflict.

The United States entered its war with Iran possessing the world’s most technologically advanced military.

It did not enter with an unlimited military.

After 39 days of air operations, missile defense and long-range strikes, the public record points to a difficult conclusion: the United States can deliver overwhelming force, but it cannot quickly replace many of the weapons expended, repair all the equipment already awaiting maintenance or rapidly generate the personnel required for a larger, longer war.

This is not evidence that the United States military has collapsed.

It is evidence that military power and military readiness are not the same thing.

A force may possess superior aircraft, missiles, submarines and intelligence systems while still lacking enough available equipment, replacement weapons, industrial capacity and trained personnel to sustain operations across several theaters.

That distinction matters now because the United States is not preparing for one isolated contingency. It faces continuing instability in the Middle East, Russia’s war economy, China’s military expansion and increasingly close military cooperation among China, Russia, Iran and North Korea.

The central question is therefore no longer whether the United States can win the opening phase of a war.

It is whether the country can continue fighting after its most scarce weapons have been fired, its maintenance backlogs have grown and its trained reserve pools have been called upon.

The Missiles Cannot Be Replaced as Quickly as They Were Fired

The Iran war consumed large numbers of expensive and difficult-to-produce missiles.

Because the Department of Defense has not publicly released complete expenditure or inventory figures, outside estimates must be treated as estimates—not confirmed totals.

Even with that limitation, the scale of the problem is difficult to dismiss.

The Center for Strategic and International Studies concluded that rebuilding important U.S. missile inventories will be a multiyear project. Its estimates show that restoring some systems to their prewar levels could require several years of sustained production. CSIS has separately warned that production timelines for several critical weapons—including SM-3, SM-6, JASSM and Tomahawk missiles—can extend three to four years.

Those delays are not caused only by congressional funding.

A missile cannot be produced merely because Congress appropriates money for it.

Production depends on factories, skilled workers, rocket motors, seekers, guidance components, microelectronics and suppliers capable of producing specialized parts. Some components come from only one qualified source. Expanding output may require new facilities, equipment, employees and safety certifications before the first additional missile reaches the military.

CSIS estimated that munitions represented approximately $26.1 billion of the Iran war’s cost, although the organization cautioned that its calculations relied on public information and analytical estimates rather than complete classified expenditure records.

The exact number of THAAD, Standard Missile, Patriot and other interceptors used remains uncertain. The important finding is not a single disputed total. It is that defensive missiles costing millions of dollars each were consumed much faster than the defense industry historically produced them.

That exposes a central weakness in modern warfare: an adversary can force the United States to expend a scarce and expensive interceptor against a less costly incoming missile or drone.

The United States may successfully defend the target and still lose something strategically valuable each time it fires.

Air Dominance Reduced Costs—but Created a Dangerous Assumption

Once Iranian air defenses had been heavily suppressed, U.S. aircraft could employ less expensive direct-attack weapons instead of relying entirely on long-range standoff missiles.

That transition helped conserve weapons such as Tomahawk and JASSM missiles.

But it depended on a condition that may not exist in another war: sustained air superiority.

A conflict in the Western Pacific would present a different operating environment. China possesses a larger and more sophisticated network of aircraft, missiles, ships, submarines, sensors and air-defense systems. U.S. aircraft might be forced to operate from greater distances while relying more heavily on scarce standoff weapons.

The tactics that conserved expensive missiles over Iran therefore cannot automatically be transferred to a conflict involving China.

CSIS concluded in May 2026 that the United States would struggle to sustain a prolonged war with China because of shortages in long-range munitions, air-defense interceptors and unmanned systems. It warned that fighting in both Europe and the Indo-Pacific would be even more difficult.

Aircraft on Paper Are Not Necessarily Aircraft Ready for War

Aircraft readiness presents another problem.

The Government Accountability Office reported in June 2026 that the F-35 fleet’s mission-capable rate fell from 67% in fiscal year 2021 to 44% in fiscal year 2025.

“Mission capable” means that an aircraft can perform at least one of its assigned missions.

The fleet’s full-mission-capable rate—the percentage able to perform every assigned mission—fell from 38% to 25% during the same period.

That distinction is important.

The finding does not mean that only one-quarter of the F-35 fleet could fly. It means that only approximately one-quarter was ready to perform its full set of assigned missions.

Even so, both measurements remained well below the military’s objectives.

GAO attributed the declining performance to sustainment problems that included depot capacity, parts shortages, maintenance delays and an incomplete transfer of sustainment responsibilities from contractors to the government.

The problem extends beyond the F-35.

The Congressional Budget Office has documented long-term declines in the availability of multiple Air Force and Navy aircraft fleets. Its more recent F-35 analysis found that fleetwide availability had generally remained between 50% and 60% since 2022, below the program’s 65% target.

A military can own hundreds of aircraft while having far fewer available on any given day.

Aircraft may be undergoing inspections, awaiting engines, missing specialized parts, receiving software modifications or sitting in depot maintenance. A prolonged war adds flight hours and wear precisely when the maintenance system is already under pressure.

The Navy Cannot Build or Repair Ships on Wartime Schedules

The Navy faces similar constraints.

GAO has repeatedly documented maintenance delays involving attack submarines, aircraft carriers and surface ships. Its 2026 military-readiness review found that the Navy had reduced some submarine idle time but had not eliminated its maintenance backlog.

The Navy’s four public shipyards perform much of the most complicated maintenance on nuclear-powered submarines and aircraft carriers. GAO has found that aging facilities, workforce limitations and infrastructure problems have contributed to delays and reduced operational availability.

Surface ships also carry substantial deferred maintenance.

GAO reported that the Navy’s surface-ship maintenance backlog had reached approximately $2.3 billion by August 2022. More recent reviews continue to identify maintenance funding, planning and industrial capacity as persistent readiness problems.

These delays cannot be solved quickly once a war begins.

Shipyards require dry docks, specialized machinery, nuclear-qualified workers, welders, engineers and supply chains capable of producing components for vessels that may remain in service for decades.

A damaged or overdue submarine cannot simply be moved to an ordinary commercial repair shop.

The Personnel Pool Is Smaller Than the Population Suggests

The United States has a population of more than 340 million people.

That does not mean it has hundreds of millions of potential military recruits.

Defense officials reported that nearly 77% of Americans between ages 17 and 24 would not qualify for military service without some form of waiver. Approximately 23% were estimated to qualify under existing standards without a waiver.

Those standards cover medical conditions, physical fitness, education, aptitude, drug use and criminal history.

At the same time, military officials said only about 9% of young people expressed a propensity to serve.

Those two measurements should not simply be multiplied to produce a precise claim that only 1% of American youth are both eligible and willing. The populations, survey methods and waiver possibilities are more complicated than that.

But the overlap is unquestionably limited.

The military must recruit from the portion of the population that is qualified, persuadable and willing to accept the demands of service. That pool is further narrowed by competition from colleges, civilian employers and other career opportunities.

The distance between military life and civilian life also matters.

With fewer Americans serving—and fewer families having a close relative who served—many potential recruits have little direct knowledge of military careers. Defense officials have identified that declining familiarity as one factor reducing interest in service.

The services improved recruiting performance in 2025, but one strong recruiting year does not erase the underlying demographic and eligibility problem.

A Draft System Exists—but It Is Not an Instant Source of Soldiers

The Selective Service System is preparing for a major change.

The Fiscal Year 2026 National Defense Authorization Act, signed on December 18, 2025, mandated automatic Selective Service registration. The agency’s strategic plan states that it must develop the federal data connections and systems necessary to implement that requirement by December 2026.

Automatic registration does not mean that a draft has begun.

A draft would still require legal authorization from Congress and the president.

Nor would registration create an immediate army.

According to the Selective Service System, current requirements call for the first inductees to be delivered to the military within 193 days after a crisis begins and the law is changed to authorize induction. Registrants would still require processing, examination, classification and training before becoming operational troops.

That timeline illustrates the difference between manpower and trained military capacity.

A civilian entered into a database is not an infantry soldier, aircraft mechanic, intelligence analyst, medic or missile technician.

Those capabilities take time to create.

The Country’s Official Warning Is Already on the Record

The bipartisan Commission on the National Defense Strategy issued its warning in direct language.

The United States, it concluded, was not prepared for the most serious military challenges it could face.

The commission found that the 2022 National Defense Strategy did not sufficiently account for simultaneous or overlapping conflicts involving China, Russia, Iran and North Korea. It called for a force capable of operating across multiple theaters rather than treating one adversary as the central challenge while accepting risk elsewhere.

The commission also cited estimates placing China’s actual annual defense spending as high as $711 billion—far above Beijing’s publicly announced figure—and noted that Russia was directing approximately 29% of its federal budget toward national defense.

Those comparisons do not prove that war is imminent or that the United States would lose one.

They establish that American planning must account for adversaries that are expanding production, building inventories and preparing their economies for prolonged confrontation.

China, Russia, Iran and North Korea are not bound together by a NATO-style mutual-defense treaty. Their interests are not identical, and the description “no-limits alliance” can overstate the formal nature of their relationship.

Their cooperation is nevertheless becoming more consequential.

It includes weapons transfers, technology exchanges, military exercises, diplomatic support and economic arrangements that allow each country to reduce the pressure imposed by the United States and its allies.

A crisis involving one could therefore create opportunities for another.

The Danger Is Not Weakness. It Is Overextension.

The public record does not support the claim that the United States military is incapable of defending the country.

It supports a more specific warning.

The United States possesses extraordinary military power, but many of its most important capabilities exist in limited quantities. Its industrial system cannot replace every missile, aircraft component, ship or trained specialist at the speed a major war could consume them.

The opening campaign against Iran demonstrated both sides of that reality.

American forces suppressed air defenses, struck distant targets and intercepted incoming threats.

They also consumed weapons that may take years to replace.

A military built around technological superiority remains dependent on factories, shipyards, depots, miners, chemical producers, semiconductor manufacturers, engineers and skilled industrial workers.

Those systems cannot be created after a war has already begun.

What the Evidence Does—and Does Not—Establish

The evidence establishes that:

• Several critical U.S. missile inventories face multiyear replacement timelines.
• F-35 mission availability remains substantially below program goals.
• Aircraft and naval maintenance systems continue to experience persistent backlogs.
• Recruiting is constrained by low eligibility and low youth interest.
• Selective Service modernization reflects renewed attention to large-scale mobilization.
• A bipartisan national commission has warned that the country is not adequately prepared for simultaneous or prolonged peer conflict.

The evidence does not establish:

• That every publicly estimated missile expenditure is an official confirmed total.
• That only 25% of F-35 aircraft can fly.
• That automatic Selective Service registration means a draft has been ordered.
• That war with China or another peer competitor is inevitable.
• That the United States military is presently incapable of winning a major conflict.

The conclusion is narrower—and serious enough without exaggeration.

The United States has built a military capable of delivering devastating force.

It has not yet rebuilt the national capacity required to replace what that force consumes.

That gap is the readiness warning.

Sources

• Government Accountability Office, F-35 Sustainment: Actions Needed to Ensure Updated Strategy Addresses Long-Standing Challenges, June 11, 2026.
• Government Accountability Office, Military Readiness: DOD Should Take Further Actions to Address Challenges Across the Air, Sea, Ground, and Space Domains, 2026.
• Government Accountability Office reports concerning naval shipyards, submarine maintenance, surface-ship maintenance and defense-industrial capacity.
• Congressional Budget Office, Availability, Use, and Operating and Support Costs of F-35 Fighter Aircraft, June 2025.
• U.S. Department of Defense, Fiscal Year 2024–2025 Recruiting Media Roundtable With Service Leaders.
• Selective Service System, Fiscal Year 2026–2030 Strategic Plan.
• Selective Service System, Return to the Draft.
• Commission on the National Defense Strategy, final report to Congress.
• Center for Strategic and International Studies, Rebuilding U.S. Missile Inventory: A Multiyear Project.
• Center for Strategic and International Studies, Is the United States Prepared for a War With China?
• Center for Strategic and International Studies, The War May Be Ending. What Did Epic Fury Cost?