Who pays for Washington’s war?

German Chancellor Friedrich Merz said last Friday that higher energy prices alone have cost Europe more than €100 billion in eight months. The number landed like a verdict. Not on Iran. On Washington.

That figure is the clearest admission yet that the Iran war is no longer an American balance-sheet problem. It is a transatlantic one. And it is only the most visible line item in a ledger that the Pentagon has spent months trying to keep off the books.

The U.S. military’s direct costs had already reached $47.1 billion by mid-October, according to an unclassified CENTCOM estimate sent to Congress. Nearly $30 billion of that is not new capability. It is replacement—munitions fired, interceptors spent, equipment turned to scrap. The money buys back what the war already consumed. That distinction matters because it exposes the war’s true fiscal character: not an investment in security, but a repair bill for overextension.

Even that sum understates the damage. The CENTCOM figure excludes the cost of rebuilding American bases and facilities across the region.

A satellite analysis identified 274 damaged structures at 24 sites during the first six months of fighting, with repair estimates between $5 billion and $15 billion. More than 115 drone and missile strikes hit structures at 26 bases by August.

Radar arrays, air-defense batteries, hangars, fuel depots—the infrastructure that sustains American power projection was itself a target, and the bill for putting it back together has not been formally added to the public tally.

The weapons arithmetic is just as unforgiving. Patriot interceptors and THAAD systems were fired to blunt incoming barrages. Replenishing them depends on production lines that move at industrial speed, not wartime speed. The Congressional Budget Office has estimated that continued operations cost roughly $2 billion a month when fighting is limited, rising to $3 billion if intensity returns to July levels. Those estimates sit on top of the regular costs of maintaining forces already in the budget. Every new round of strikes adds to a total that is still being counted.

The strongest counter-argument is familiar: the war was necessary to degrade Iran’s military capacity, protect shipping through the Strait of Hormuz, and reassure regional partners. Even critics concede that Iranian-aligned attacks on Gulf shipping posed a genuine threat to energy flows. But necessity is not the same as competence.

The war’s architects predicted a short, sharp operation. Eight months later, the bill has grown by more than 25 percent over the Pentagon’s July estimate, and the administration is preparing for possible renewed strikes after the midterms. A strategy that cannot close its own cost ledger is not a strategy. It is a treadmill.

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Europe’s position on that treadmill is even more revealing. Merz’s €100 billion figure is not a plea for reimbursement. It is an indictment of a decision-making process that treated allied consultation as optional. European Council President António Costa has called Washington an unpredictable ally and warned that Europe cannot always count on coordination from Washington. Spanish Prime Minister Pedro Sánchez has cited a similar energy-cost estimate and demanded an end to the fighting. These are not anti-American outbursts. They are the sounds of governments discovering that the alliance leash runs both ways. Protection comes with exposure. When the patron launches a war without asking, the client absorbs the shock.

That shock reaches Gulf capitals too. Saudi Arabia, the UAE, and Qatar have reportedly refused to allow their territory or airspace to be used for strikes on Iran, and they are working through diplomatic channels to prevent a new round of fighting. For decades, hosting American forces was treated as a security guarantee. In a regional war, it becomes a targeting criterion.

The Gulf states’ scramble to head off renewed strikes is not a rupture with Washington. It is a hedging strategy born of the realisation that the alliance leash can drag them into a conflict they cannot control and did not choose.

At home, the war’s costs are showing up in household bills. An analysis of eight competitive states found electricity and gasoline expenses rose by 13 to 17 percent in the first seven months of the year, adding $42 to $62 a month to average household costs. Gasoline alone climbed 19 to 23 percent. The war is not the sole cause—grid expansion and demand play a role—but disruption to energy routes and global market instability have compounded the pressure. With the midterms three days away, the political system is being asked to render a verdict on a war whose costs are diffuse, delayed, and only partially disclosed. The ballot box is a blunt instrument for auditing a war. Voters can punish an incumbent. They cannot itemize the bill. In that sense, the midterms function as a powerless-ballot referendum on a policy that was never submitted for approval in the first place.

What comes next is not a clean exit. The administration faces pressure to explain what the war has achieved before requesting another supplemental appropriation. Congress will want a full accounting of base damage, weapons shortfalls, and the industrial timeline for replenishment. Allies will want something harder to measure: a credible assurance that the next decision of this magnitude will not arrive as a fait accompli. Neither request is unreasonable. Both are unlikely to be fully satisfied. The deeper dilemma is structural.

A war fought without allied consent, financed without transparent accounting, and sustained without a clear political end state has produced a bill that will outlast the fighting. The €100 billion in Europe is not a one-time charge. It is a down payment on a longer season of energy insecurity and alliance distrust.

The $47.1 billion in Washington is not the final figure. It is the minimum.

The invoice is in the mail. The question is not whether it will be paid, but who will be left holding it when the next round of strikes is ordered.

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The views expressed in this article belong to the author and do not necessarily reflect the editorial policy of Middle East Monitor.