Iranian strikes have damaged or destroyed hundreds of buildings and other structures at bases across the Middle East, and caused about $184 million worth of damage at U.S. diplomatic facilities, according to a Pentagon watchdog report.
The inspector general's report to Congress on Operation Epic Fury - the Trump administration's name for the war with Iran - also details the extent of U.S. munitions shortages, in the first comprehensive public accounting of the war, which is now in its seventh month.
The report, released Monday, covers operations through June 30. It contains input from the departments of Defense and State and other agencies to provide the most complete picture yet of the cost and military impact of the ongoing conflict.
Buildings and other structures at U.S. bases in Kuwait, Bahrain, Qatar, UAE, Saudi Arabia, Iraq, Oman and Jordan were damaged or destroyed in the war, the report stated, adding that U.S. diplomatic facilities in Iraq, Kuwait, Saudi Arabia and the United Arab Emirates also sustained damage.
The mounting costs of the war and impact on U.S. munitions stockpiles has already come under scrutiny. In July, Defense Secretary Pete Hegseth told a Senate hearing that the war has cost $37.5 billion and defended the administration's request for a further $67 billion to restock the Pentagon's arsenal and avoid looming budget shortfalls.
The latest report details how the war has "resulted in strategic inventory shortfalls" of munitions and "revealed industrial base bottlenecks for munitions resupply.
It said the Defense Department is working to "streamline" procurement and production processes, as well as stockpile critical materials, components and munitions to mitigate the shortage. But while these efforts have begun, the defense industrial base requires "significant lead time" to expand production.
"The most persistent bottlenecks remain in the production of solid rocket motors, the availability of high-grade explosives and propellants, and the recruitment of skilled manufacturing labor," it states.
The expenditure of U.S. munitions is increasingly worrying U.S. allies and Pentagon officials in the Indo-Pacific region who fear the war in Iran could undermine readiness for a potential conflict with China. The weapons drain has become a source of tension between President Donald Trump and Hegseth, though Trump has denied U.S. weapons are running low.
On Monday, Trump touted U.S. weapons stockpiles in a post on Truth Social, saying he had received a report noting the U.S. is producing "more Exquisite and Elite Weapons than at any time in our History" that were being delivered to U.S. forces.
White House spokeswoman Anna Kelly said Tuesday in an emailed statement that the U.S. military has "more than enough munitions, ammo, and stockpiles to serve all of the Commander-in-Chief's strategic goals and beyond."