The U.S. military has fired more than 850 Tomahawk cruise missiles at Iranian targets in just four weeks of Operation Epic Fury, drawing alarm from Pentagon officials who worry the campaign is draining a weapons stockpile that cannot be quickly replaced. The burn rate, which began with the first Navy launches on March 1, has forced a political and strategic reckoning over how long the United States can sustain high-intensity strikes without weakening its ability to respond to threats elsewhere. With munitions costs for the opening 48 hours alone estimated at $5.6 billion, the tension between operational tempo and long-term readiness is shaping up as one of the defining pressures of the conflict.
850 Tomahawks in Four Weeks
The scale of Tomahawk use has no close precedent in recent U.S. military history. People familiar with the matter said that more than 850 missiles have been fired since Operation Epic Fury began, a figure that reflects both the density of Iranian air defenses and the Pentagon’s preference for standoff weapons that keep pilots out of danger. Each Tomahawk costs roughly $2 million, and the global supply of the weapon is limited, meaning replacements depend on production lines that were already stretched before the war started.
That production constraint is what separates the current situation from past campaigns. In the 2003 invasion of Iraq, the U.S. launched approximately 800 Tomahawks over the course of the entire war. The Iran campaign has surpassed that total in under a month. The concern, according to people briefed on internal assessments, centers on the fact that the existing inventory is finite and that sustained use at this pace could leave the Navy short of the missiles it would need for contingencies in the Pacific or elsewhere.
Senior officers have warned that the United States has long treated Tomahawks as the opening salvo of choice in any major operation, a way to blind and suppress enemy defenses before risking aircraft. War plans for potential conflicts with China, North Korea, or Russia all assume a substantial initial volley of cruise missiles. Burning through hundreds in a single regional campaign, they argue, risks undermining those plans unless production can be dramatically accelerated, something that cannot happen overnight.
Why Tomahawks Instead of Manned Aircraft
Iran’s air defense network is far more capable than what the U.S. faced in Iraq, Libya, or Syria. That reality has driven commanders to lean heavily on cruise missiles rather than risk sending manned aircraft into contested airspace. Pentagon officials have acknowledged that the danger to pilots in well-defended skies was a primary factor in the early reliance on Tomahawks. The missiles can be launched from ships and submarines hundreds of miles from their targets, keeping crews out of range of Iranian surface-to-air systems.
But this approach creates its own problem. Every Tomahawk fired is one fewer available for a future crisis, and the industrial base cannot produce them fast enough to keep pace with the current rate of expenditure. The tradeoff is stark: protect pilots now by burning through a finite weapons inventory, or accept greater aircrew risk to conserve missiles for potential conflicts with larger adversaries like China. Most public discussion has focused on raw expenditure numbers, but the deeper vulnerability may be strategic. If the Tomahawk stockpile drops below certain thresholds, the U.S. loses a key tool for the opening hours of any major-power conflict, a scenario that defense planners have war-gamed for years.
U.S. officials were aware of this risk even before the first strikes. Early in the campaign, internal assessments described how Iran’s integrated air defenses, mobile launchers, and hardened facilities would force a heavy initial reliance on standoff weapons. Those same assessments, according to people familiar with their contents, warned that even a short, intense air campaign could consume a significant share of the Tomahawk inventory, especially if commanders prioritized minimizing aircraft losses over conserving missiles.
$5.6 Billion in 48 Hours
The financial dimension of the munitions burn is just as striking. Pentagon estimates put the cost of weapons expended in the first two days of operations at $5.6 billion, a figure that includes Tomahawks and other precision-guided weapons fired since late February. That number does not account for the operational costs of deploying carrier strike groups, refueling aircraft, or sustaining logistics across the theater.
The spending pressure has already triggered an extraordinary budget request. The Pentagon sent a proposal to the White House seeking $200 billion in supplemental funding for the Iran war, with Defense Secretary Pete Hegseth arguing that the money is needed both to sustain operations and to rebuild expended stocks. A supplemental of that size would rival the peak annual spending of the Afghanistan and Iraq wars and would require congressional approval at a time when lawmakers are already divided over the conflict’s scope and duration.
Administration officials have privately acknowledged that the sticker shock could complicate efforts to maintain public support. The White House has emphasized the need to deter further Iranian aggression and protect regional allies, but the sheer cost of high-end munitions has forced a parallel conversation about tradeoffs. Every billion dollars spent on Tomahawks and other precision weapons is money not available for domestic priorities, a reality that members of Congress from both parties have begun to highlight.
Gravity Bombs as a Cheaper Fallback
Faced with the cost and supply pressures, senior defense officials have begun shifting the strike mix toward less expensive alternatives. Reporting on the early phase of the campaign indicated that leadership was publicly emphasizing cheaper gravity munitions as a way to slow the Tomahawk burn rate. Gravity bombs, which are dropped from aircraft rather than launched from ships, cost a fraction of what a cruise missile does. But using them means putting pilots back into Iranian airspace, precisely the risk that the Tomahawk-heavy approach was designed to avoid.
This pivot exposes a tension that has not received enough scrutiny. The shift to gravity bombs is not simply a cost-saving measure; it is an implicit acknowledgment that the original strike plan was unsustainable. If Iranian air defenses remain effective, the cheaper alternative could prove far more expensive in human terms. A single downed aircraft and captured pilot would transform the political dynamics of the war overnight, potentially forcing the administration to either escalate dramatically or seek a negotiated pause.
Commanders have tried to mitigate that risk by pairing gravity-bomb runs with electronic warfare, decoys, and suppression of enemy air defenses. Yet each additional layer of protection adds complexity and cost, eroding some of the savings that come from using simpler munitions. The result is a constantly shifting calculus: how much risk to accept in the air in order to preserve the Navy’s cruise-missile magazines for a future crisis that may or may not materialize.
Strain on the Defense Industrial Base
The Tomahawk burn rate has also exposed long-standing weaknesses in the U.S. defense industrial base. Even before the Iran war, Pentagon planners worried that production lines for key munitions were too fragile to support a prolonged high-intensity conflict. Officials now concede that increasing output will require new contracts, workforce expansion, and in some cases facility upgrades, steps that could take years to fully bear fruit.
Those concerns extend beyond Tomahawks. The same factories and suppliers that produce cruise missiles are also involved in manufacturing other precision weapons, meaning any surge in one area can create bottlenecks elsewhere. A senior defense official, speaking on the condition of anonymity, said the Pentagon is reviewing options to prioritize certain munitions and temporarily defer others, but warned that “you cannot surge a complex missile factory the way you surge a fuel depot.”
Congress has begun to take notice. Lawmakers on key committees have pressed Pentagon witnesses about how quickly industry can replenish stocks and whether current contracts include surge clauses. Some members have floated the idea of multiyear procurement deals to give manufacturers more certainty, while others have questioned whether the United States should be so dependent on a single class of cruise missile for its opening moves in major operations.
Domestic Politics and Public Perception
The combination of soaring costs, heavy missile use, and an open-ended campaign has created a volatile political backdrop in Washington. Public polling cited by administration allies suggests initial support for striking Iranian targets, particularly after attacks on U.S. forces and regional partners. But as the war stretches on, the risk of a backlash grows, especially if Americans begin to associate the conflict with spiraling expenses and dwindling readiness.
The administration has tried to frame the campaign as both necessary and controlled, emphasizing that commanders are adjusting tactics to limit civilian casualties and manage resources. Yet critics argue that the very need to pivot away from Tomahawks toward gravity bombs shows that the war plan was not fully aligned with the realities of the U.S. arsenal. They warn that the United States could find itself in a worst-of-both-worlds scenario, a prolonged conflict that erodes deterrence elsewhere while failing to decisively degrade Iran’s capabilities.
Internationally, allies are watching closely. Some European governments have expressed quiet concern that the U.S. focus on Iran, and the accompanying drawdown of key munitions, could weaken Washington’s ability to respond quickly to other crises. At the same time, partners in the Middle East have urged the United States to maintain pressure on Tehran, arguing that any sign of hesitation would be read as weakness. That external pressure further complicates the Pentagon’s effort to balance immediate operational demands with long-term strategic needs.
A Test of U.S. Staying Power
Ultimately, the Tomahawk burn rate has become a proxy for a larger question: how much high-end warfare the United States can sustain without hollowing out its deterrent elsewhere. The early weeks of Operation Epic Fury have demonstrated that U.S. forces can deliver massive firepower on short notice, but they have also revealed the limits of a system built on expensive, exquisite weapons produced in relatively small numbers.
As the conflict enters its next phase, officials say the goal is to transition to a more measured, sustainable tempo of operations — one that relies less on daily barrages of cruise missiles and more on a mix of airpower, cyber operations, and regional partners. Whether that shift will be enough to preserve U.S. stockpiles, reassure allies, and maintain pressure on Iran remains uncertain. What is clear is that the opening month of the war has forced a painful reckoning with the costs, in dollars and missiles, of modern great-power competition.
That reckoning extends beyond Washington. Defense analysts argue that adversaries are studying the U.S. experience closely, drawing lessons about how quickly American stockpiles can be depleted and how sensitive its politics are to mounting costs. The outcome of Operation Epic Fury, and the choices the United States makes about how to fight and what to conserve, will shape not only the trajectory of the Iran conflict but also the contours of deterrence in Europe and Asia for years to come.
For now, the Navy’s vertical launch cells continue to cycle, and Tomahawks continue to fly. Each launch represents both a tactical success and a strategic subtraction, a reminder that in modern war, the arithmetic of munitions can be as consequential as any battlefield map. Whether the United States can reconcile its immediate objectives with the finite nature of its arsenal may prove to be the defining test of this campaign.
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*This article was researched with the help of AI, with human editors creating the final content.
