Pentagon watchdog puts first price tag on Iran war: $33.4 billion, 18 dead, ammunition running low

The Pentagon's independent watchdog has delivered the first official accounting of what the seven-month-old war with Iran has cost the United States: $33.4 billion, 18 dead American service members, hundreds of damaged buildings and a stockpile of missiles and munitions strained badly enough that investigators are warning of "strategic inventory shortfalls."

The report, prepared by the Department of War's Office of Inspector General and delivered to Congress on September 14, is the first quarterly reckoning of Operation Epic Fury, the campaign the United States and Israel launched against Iran on February 28. It amounts to the most detailed public picture yet of a war that has dragged on far longer than the Trump administration initially signaled, and that continues to disrupt oil shipping through the Strait of Hormuz even as the document was being briefed to lawmakers.

The numbers

According to the inspector general's report, which covers the period from the war's start through June 30, the Department of War had spent $33.4 billion as of June 29, a figure first detailed publicly in reporting on the document's release. Of that, $22.3 billion went to replace expended munitions, $3.7 billion covered equipment losses, and $7.4 billion was tallied in other operating obligations. The State Department separately reported roughly $184 million in damage to diplomatic facilities in Iraq, Kuwait, Saudi Arabia and the United Arab Emirates, plus tens of millions more spent evacuating American citizens from the region.

The human toll: 18 U.S. service members have died since February 28 — 11 in combat and seven in non-hostile incidents — and 417 have been wounded. Iranian strikes have damaged or destroyed "hundreds" of buildings and structures at American bases spread across eight countries, including Bahrain, Qatar, Kuwait, Saudi Arabia, the UAE, Iraq, Oman and Jordan. Dozens of aircraft have been damaged or destroyed, among them four F-15E Strike Eagles, an F-35A, several KC-135 refueling tankers, multiple helicopters and as many as 30 MQ-9 Reaper drones.

Most striking to defense analysts was the inspector general's finding that munitions expenditure has "resulted in strategic inventory shortfalls" and exposed bottlenecks in the industrial base's ability to restock — specifically in solid rocket motors, high-grade explosives and propellants, and in the skilled labor needed to manufacture them.

How the war reached this point

Operation Epic Fury began in the early hours of February 28, when U.S. forces launched the campaign in coordination with Israel, striking targets across Iran in an operation that killed Supreme Leader Ali Khamenei and other senior officials. Details of the war's scope are catalogued on Central Command's page tracking the operation. A ceasefire mediated by Pakistan took hold on April 8 and was extended indefinitely by President Trump on April 21, but it broke down in July, and fighting has continued intermittently since, centered increasingly on the Strait of Hormuz, through which roughly a fifth of the world's oil and liquefied natural gas passes.

In recent weeks the conflict has taken the form of a tanker war. U.S. forces have struck Iranian oil tankers, while Iran's Revolutionary Guard has fired on and mined shipping lanes used by tankers bound for Gulf ports, at times declaring stretches of the strait off-limits to traffic. As the inspector general's report was being briefed on Capitol Hill, U.S. Central Command was publicly disputing an Iranian military claim that a Panama-flagged tanker, the El Gaia, had struck a naval mine south of the strait; American officials disputed Tehran's version of events and said the vessel had instead been hit again by an Iranian drone. The dueling accounts have become a near-weekly occurrence, and Brent crude has traded above $100 a barrel as insurers and shipowners reroute or delay voyages through the waterway.

Who is affected

More than 50,000 U.S. troops remain deployed across Central Command's area of responsibility, and the families of the 18 dead and 417 wounded are the most direct casualties of a war that the administration has repeatedly signaled was nearing its end. Gulf host governments — Bahrain, Qatar, Kuwait, Saudi Arabia and the UAE among them — are absorbing damage to the American installations on their soil and the diplomatic strain of hosting a war that has drawn Iranian retaliation onto their own territory; Jordan, too, has been struck. Global oil consumers and shippers are paying through elevated freight and insurance costs tied to the Hormuz disruptions. And within the United States, the defense industrial base — from rocket-motor plants to the skilled machinists needed to run them — is under pressure to accelerate production of munitions that officials acknowledge cannot be replaced quickly.

"For the first time in nearly eight months, the American people finally have an official glimpse into the cost of this disastrous war — and it is jaw-dropping. Our servicemembers are exhausted, our munitions are depleted, our diplomatic capabilities have been wrecked and 18 of our troops will never come home." — Sen. Tammy Duckworth (D-Ill.), member of the Senate Armed Services Committee

Reaction and what happens next

Defense Secretary Pete Hegseth, who now also holds the title "Secretary of War" under a 2025 order restoring the department's historic name, has disputed characterizations that the military is running critically short of weapons and has urged manufacturers to expand production. President Trump has repeatedly said the United States has a "virtually unlimited supply" of weapons and has dismissed suggestions that stockpiles are running low. Congressional Democrats, led by Duckworth, have pressed for months for exactly this kind of formal accounting, arguing that the Pentagon's public statements have understated both the war's human toll and its strain on military readiness; a separate, ongoing inspector general audit is examining whether billions of dollars in open funding commitments tied to the operation should be canceled or reallocated.

Diplomatically, the pressure for an off-ramp is building from an unlikely direction. Iranian Foreign Minister Abbas Araghchi was due in Beijing on September 16 for talks with Chinese Foreign Minister Wang Yi, continuing a pattern of Chinese-mediated contacts in which Beijing has pressed for a negotiated end to the war and a reopening of the strait to normal shipping. The visit comes little more than a week before Chinese President Xi Jinping is expected in Washington for talks with Trump, giving China's role as an interlocutor between Tehran and Washington fresh significance. For now, though, the inspector general's next quarterly report — and the next tally of ships struck in the strait — are likely to arrive before any resolution does.