WASHINGTON, July 21 (Reuters) - The United States' war in Iran has cost $37.5 billion so far, U.S. Defense Secretary Pete Hegseth said on Tuesday, an increase of nearly $8 billion since the last public estimate. Hegseth told lawmakers at a hearing in Washington that the figure included certain aspects of the war as well as anticipated costs through September 30.

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The war with Iran has cost $37.5 billion so far, according to US Defense Secretary Pete Hegseth, but the bill is likely much higher, experts have told CNN.

The Trump administration is pursuing what would amount to a $1.5 trillion defense budget for fiscal 2027.

Latest estimate before that, in May, was $7.5bn lower

At a Senate budget hearing on Tuesday, US Defense Secretary Pete Hegseth estimated that the war with Iran had so far cost $37.5 billion.