The US military's price tag for the war on Iran has grown to $43.6 billion as of September 3, according to a new estimate provided this week to lawmakers.
The figure from US Central Command, which oversees operations in the Middle East, offers the most up-to-date cost for the conflict since it was launched by the United States and Israel on February 28.
A Congressional Budget Office report released on Tuesday said the war had cost $38 billion through August 1 and will continue to rack up expenses of around $3 billion a month depending on the conflict's intensity.
The new breakdown on Friday, seen by The Associated Press and reported earlier by Punchbowl News, also showed the continued use of expensive munitions by American forces.
Weapons costs jumped by more than $6 billion in just over a month, from $21.7 billion listed in the CBO report to $28.1 billion in US Central Command’s estimate.
The financial cost is just one measure of the impact of the Iran war, which also is affecting oil prices and the stock market and has led to deaths and injuries of American troops.
Death toll and midterms
The political costs will be calculated in November's midterm congressional elections, with Republicans facing increasing headwinds from the war's unpopularity.
The US military's one-page breakdown to Congress includes costs for operating warships, planes and bases as well as for equipment losses and medical support for troops.
Casualties tallied by the Pentagon have included 18 dead and more than 830 wounded, according to the Defense Casualty Analysis System.
The report does not include damage to US bases in the Middle East, which Tehran has attacked with ballistic missiles and drones.
A report from the Pentagon inspector general released on Monday said Iranian strikes have damaged and destroyed hundreds of buildings and other structures at US bases in Kuwait, Bahrain, Qatar, the United Arab Emirates, Saudi Arabia, Iraq, Oman and Jordan.
In the new report to Congress, the figure for munitions was by far the largest, constituting well over half of all costs.
The advanced weapons that have been in the most demand are defensive missile interceptors, such as those launched by the Army's Patriot and THAAD systems.
The diminished stockpiles also have caused alarm in Europe, where US and NATO officials have told the AP that there is a “beyond critical” shortage of missile interceptors.
