US Defence Secretary Pete Hegseth told lawmakers on Tuesday that the Iran war has cost an estimated $37.5 billion (£28 billion) so far.
He provided the updated figure while appearing before the Senate Appropriations Committee, which is reviewing the Defence Department's request for $87.6 billion in additional funding.
Hegseth said the proposed funding would be used to "reinforce peace through strength".
Funding request under scrutiny
The hearing focused on the Pentagon's budget request as senators questioned senior defence officials on military spending and ongoing operations.
Hegseth was joined by other senior officials, including Joint Chiefs of Staff Chair Gen Dan Caine, who also appeared before the committee.
Conflict intensifies
The hearing came after three US soldiers were killed in the Middle East and President Donald Trump ordered fresh military strikes against Iran, amid continuing hostilities in the region.
Lawmakers questioned defence leaders as the conflict and its financial cost continue to grow.
Protesters interrupt hearing
Hegseth's opening remarks were repeatedly interrupted by protesters shortly after he began speaking to the committee.
Despite the disruptions, the hearing continued as senators examined the Pentagon's funding request and military operations.
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22 July 2026
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