Pentagon reports $43.6B Iran war cost, ammunition shortages threaten readiness

The U.S. Pentagon reported that the Iran war cost $43.6 billion as of September 3, 2026, according to an update shared with Congress by U.S. Central Command. The figure breaks down into $28.1 billion spent on munitions replacement, $11.2 billion on operations, and $4.3 billion on equipment losses. The estimate excludes repair costs for damaged military and diplomatic facilities across the Middle East, making the true total substantially higher.

The Defense Department's inspector general released the first formal government accounting of the conflict on September 14, covering the period from February 28 through June 30. The report found that Iranian strikes damaged or destroyed hundreds of buildings and structures at U.S. military bases in Kuwait, Bahrain, Qatar, the United Arab Emirates, Saudi Arabia, Iraq, Oman, and Jordan. U.S. diplomatic facilities in Iraq, Kuwait, Saudi Arabia, and the UAE sustained approximately $184 million in damage. The inspector general confirmed that the prolonged conflict has created critical shortages in munitions stockpiles, with the report stating the war "has resulted in strategic inventory shortfalls and revealed industrial base bottlenecks for munitions resupply."

The munitions shortage has prompted operational changes across the region. The destruction of the Navy's main logistics hub in Bahrain forced the military to rely on the distant Indian Ocean island of Diego Garcia as a replacement hub, stretching resupply cycles to 14–18 days. Medical evacuation helicopters were withdrawn from Iraq and Kuwait, requiring ground evacuations to local facilities. The Pentagon is working to streamline procurement processes and increase production capacity to address the constraints.

President Donald Trump has repeatedly disputed reports of ammunition shortages, stating on September 14 that the U.S. is "producing more Exquisite and Elite Weapons than at any time in our History." Earlier, Trump claimed the U.S. has "virtually unlimited amounts" of ammunition. Defense Secretary Pete Hegseth had also denied shortages before the inspector general's report was released, though he has subsequently urged the defense industry to accelerate weapons manufacturing.

Military personnel losses through June 30 included at least 18 killed and more than 800 wounded, with over 50,000 American service members deployed in the Central Command area of responsibility. The Congressional Budget Office estimated in mid-September that the war would cost an additional $2–3 billion per month depending on conflict intensity. The conflict began on February 28 with U.S. and Israeli airstrikes on Iran, followed by Iranian retaliation. A ceasefire agreement signed in June was abandoned when the U.S. resumed large-scale strikes on July 8, citing alleged Iranian violations regarding the Strait of Hormuz.