The United States Defense Department's inspector general has officially confirmed that the ongoing war against Iran has produced significant ammunition shortfalls and exposed deep vulnerabilities in the country's military supply chain. The mandatory report, submitted to Congress on Monday and the first of its kind, covers the period from February 28 to June 30, during which Operation Epic Fury — the official designation for the US-led campaign — cost an estimated $33.4 billion. Of that total, $22.3 billion was spent on expended munitions alone, with a further $3.7 billion attributed to equipment losses and $7.4 billion to other operational expenses.

The report states plainly that "the munitions expenditure on OEF has resulted in strategic inventory shortfalls and revealed industrial base bottlenecks for munitions resupply." Among the equipment losses documented are four F-15 fighter jets destroyed, one F-35 damaged, an A-10 attack aircraft, seven KC-135 aerial refuelling tankers damaged, and more than 30 MQ-9 Reaper drones destroyed by June. In a significant disclosure, the report also officially confirms for the first time that Iran struck the US Navy's main logistics hub in Bahrain — a small Gulf island state that hosts the US Fifth Fleet — using drones and ballistic missiles. Iranian strikes also damaged or destroyed hundreds of buildings at American bases across Kuwait, Qatar, the UAE, Saudi Arabia, Iraq, Oman, and Jordan, though those reconstruction costs are not included in current estimates.

The operational strain extends beyond hardware. More than 20,000 US military personnel and diplomats have been relocated since the conflict began, and most medical assessments of the wounded are now being conducted in the field due to the redeployment of air evacuation assets amid security concerns. US forces have also conducted up to 5,000 sorties from European bases to support the war effort. The State Department has reported over $200 million in damages to its facilities in Iraq, Kuwait, Saudi Arabia, and the UAE.

The report's findings stand in stark contrast to the Trump administration's public messaging. President Donald Trump has repeatedly dismissed concerns about depleted stockpiles, claiming just weeks ago that the US has "virtually unlimited" ammunition, and reiterating on Monday via his Truth Social platform that America is producing "more Exquisite and Elite Weapons than at any time in our History." Defence Secretary Pete Hegseth has similarly denied reports of shortages. CNN had previously reported that dwindling stocks of long-range guided missiles and air-defence interceptors had constrained US military strategy, with the military having "nearly exhausted 80 per cent" of its THAAD interceptor stockpile. THAAD, or Terminal High Altitude Area Defense, is a system designed to intercept short- and medium-range ballistic missiles.

The gap between official rhetoric and documented logistical reality raises serious questions about the sustainability of the conflict. The sheer scale of the opening offensive — more than 1,000 targets struck in the first 24 hours, a tempo the military has not matched since — indicates how rapidly stocks were drawn down early in the campaign. With the war now projected by the report to potentially extend past November's US midterm elections, well beyond Trump's initial expectation of a swift conclusion, inventory management and industrial production capacity may prove as decisive as battlefield performance in determining how the conflict unfolds.