US Munitions Shortfalls Exposed After Iran War

The US Defense Department’s Inspector General has found that the war with Iran created strategic shortfalls in American munitions and exposed major bottlenecks in the US defence supply chain. The report provides one of the most detailed official accounts so far of the conflict’s impact on weapons stocks, military equipment, bases, personnel and logistics networks.

The congressionally mandated report covered the period from February 28 through June 30 and estimated that the conflict had cost the US military about $33.4 billion.

Iran War Exposed US Munitions Shortfalls

The Inspector General said weapons used during Operation Epic Fury resulted in strategic inventory shortfalls and exposed difficulties within the US defence industrial base in replacing munitions.

The Pentagon is working to improve procurement procedures and reduce production lead times. It is also stockpiling critical materials, components and selected munitions so that it can respond more quickly to future contingencies.

However, the defence industry needs significant lead time to increase production. The report identified continuing bottlenecks involving solid rocket motors, high-grade explosives and propellants, along with difficulties in recruiting skilled manufacturing workers.

Experts have previously estimated that returning advanced missiles and defensive interceptors to pre-war stock levels could take around three years.

The conflict had already seen Iran respond with attacks on American positions, including Iran strikes on US military sites.

Trump and Hegseth Reject Munitions Shortage Claims

The Inspector General’s findings contrast with repeated statements from US President Donald Trump and Defense Secretary Pete Hegseth that the US military has enough weapons for its operations.

Hegseth has rejected reports that American forces were running low on munitions. Trump has also said the United States is producing large quantities of advanced weapons and delivering them to US forces in the Middle East and elsewhere.

Trump previously described US ammunition supplies as virtually unlimited and said defence companies were building large numbers of plants and factories.

At the same time, CNN had reported shortages involving long-range guided missiles and air-defence interceptors, including concerns that the US military had nearly exhausted 80% of its THAAD interceptor stock.

Earlier developments in the conflict also included reports of an Iran US ceasefire agreement that raised hopes of reducing regional tensions

Iran War Cost $33.4 Billion by June

The Inspector General estimated that the war had cost approximately $33.4 billion as of June 29.

The figure included:

• $22.3 billion in expended munitions

• $3.7 billion in equipment losses based on replacement costs

• $7.4 billion in other expenditures

The estimate did not include the cost of repairing damaged military infrastructure and facilities.

The Pentagon had publicly estimated the war’s cost at $37.5 billion in July, while NBC News reported that internal US estimates had placed the eventual cost between $80 billion and $100 billion.

Defense Secretary Hegseth also told Congress on July 21 that without additional funding, the Pentagon could face serious shortages affecting its ability to pay service members, replace equipment and munitions and maintain global operations.

The White House had requested $87.6 billion in emergency supplemental funding on June 24. The request included $67.1 billion for the Pentagon, with $21 billion specifically allocated for munitions.

The conflict had also led to diplomatic efforts, with the US Iran preliminary peace agreement previously reported as an attempt to end the war

US Aircraft and Drones Suffered Losses

The report provided one of the first official accounts of damage to US military equipment during the early months of the war.

It said four F-15E fighter jets, an F-35A Joint Strike Fighter and an A-10 Warthog were destroyed or extensively damaged.

The broader accounting also reported 12 KC-135 refuelling aircraft and nine other aircraft destroyed. Another section of the report said seven KC-135 refuellers were damaged or destroyed, including five that were hit by Iranian munitions while on the ground in Saudi Arabia.

More than 30 MQ-9 Reaper drones had been destroyed by June, according to the report, citing the Congressional Research Service. Each drone costs around $30 million.

A KC-135 crashed in Iraq after colliding with another KC-135, killing six service members. The incident was classified as non-hostile.

The report also recorded the death of a helicopter pilot in a crash in the Arabian Sea, which was likewise classified as a non-hostile incident.

14 US Troops Killed and 417 Wounded

Seven US service members were killed in action between February 28 and June 30, while another seven died in non-hostile incidents during the same period.

The report recorded 417 wounded service members during the period it covered. Four additional US troops were killed in action in July, after the report’s June 30 cutoff.

During the first 24 hours of the war, US Central Command said American forces struck more than 1,000 targets. The report noted that the scale of those attacks was not repeated during the later months of the conflict.

Iranian Attacks Damaged US Bases

Iranian strikes damaged or destroyed hundreds of buildings and structures at US bases across Kuwait, Bahrain, Qatar, the UAE, Saudi Arabia, Iraq, Oman and Jordan.

The report did not provide a total repair cost for the damaged military facilities because it remained unclear which bases would ultimately be rebuilt and who would pay for the work.

Iran also targeted the US Navy’s main regional logistics hub in Bahrain using drones and ballistic missiles.

The damage forced US Central Command to move personnel, assets and storage facilities and shift supply operations to alternative hubs, including Diego Garcia in the Indian Ocean.

As a result, logistics cycles increased to between 14 and 18 days for supporting US operations in the Middle East.

The conflict also affected regional economic conditions, with an earlier Iran US peace deal boosting investor confidence in financial markets

Medical Evacuations Faced New Challenges

The attacks also changed how US forces operated across the region.

The report said CENTCOM shifted personnel, assets and storage facilities as American positions came under attack from Iran and allied proxy forces.

One major change was the withdrawal of Army medical evacuation helicopters from Iraq and Kuwait. Most medical evacuations were subsequently conducted by ground, with injured personnel transported by local ambulances to nearby treatment facilities.

The report also noted intermittent supply shortages and disruptions to the military’s regional mail system. US forces conducted as many as 5,000 flights from European bases in support of the war.

Bahrain Attack Disrupted Naval Logistics

Damage to the US naval facility in Bahrain forced American forces to rely more heavily on distant logistics infrastructure.

With Bahrain facing significant damage and difficulties in establishing adequate naval bases and support ports, Diego Garcia became a major alternative sea logistics hub.

The resulting 14-to-18-day resupply cycles complicated operations while US forces were conducting airstrikes against Iran.

US military and intelligence officials also discussed whether some changes to the US military presence in the Middle East could become permanent, including possible long-term reductions in personnel and facilities.

Pakistan was also closely following the regional conflict, including developments surrounding Pakistan Iran gas pipeline talks

US Diplomatic Facilities Also Damaged

The Inspector General’s report, prepared with the State Department and US Agency for International Development inspector general offices, also detailed damage to American diplomatic facilities.

The State Department recorded more than $208 million in damage across Iraq, Kuwait, Saudi Arabia and the UAE.

Around $184 million was attributed to damage to diplomatic facilities, while another $25 million resulted from delays to construction projects.

The State Department had separately reported another $113 million in conflict-related costs, including nearly $80 million for contingency measures such as evacuations.

Embassies and Consulates Came Under Attack

The US Embassy in Riyadh was struck by two Iranian drones in early March, causing extensive damage, including damage to a CIA station located within the compound.

Around the same time, a drone targeted the US consulate in Dubai and damaged a utility building.

The US Embassy in Kuwait was forced to suspend operations completely in March after being damaged by Iranian drones. It resumed emergency operations for Americans in late June.

More than 600 attacks against US facilities in Iraq were reported between February and May. Those attacks resulted in the largest diplomatic damage bill, estimated at around $157 million.

Thousands of Diplomats and Citizens Evacuated

The conflict forced the United States to remove thousands of personnel from the region.

Between February 23 and June 30, as many as 3,500 diplomatic personnel were outside the region, with most US posts operating under authorised or ordered departure arrangements.

Bahrain, Iraq, Jordan, Qatar, Saudi Arabia and the UAE were placed under ordered departure. Non-emergency personnel and family members were required to leave under those orders.

The State Department also evacuated around 9,000 US citizens from countries across the Middle East and Europe in the weeks and months following the February 28 start of the war.

The evacuation operation used private and commercial flights as well as land and sea transportation and had cost more than $11 million by late June.

War’s End Remained Uncertain

Trump initially predicted that the war would last only weeks. He later said the conflict could continue until “right after” the November midterm elections, or potentially end before then.

The Inspector General’s report did not address a reported US strike on an elementary school in Iran during the opening hours of the conflict. The US military had not publicly released an internal investigation into that bombing at the time of the report.

The Pentagon also did not immediately respond to requests for comment on the Inspector General’s findings.

Key Findings of

the Inspector General’s Report

The report provides a comprehensive official picture of the war’s impact on US weapons stocks, military assets, bases, diplomatic facilities, personnel and logistics networks.

Its findings show that the conflict placed substantial pressure on American munitions supplies, military infrastructure and the defence industrial base.