Defense Secretary Pete Hegseth and Gen. Dan Caine, chairman of the Joint Chiefs of Staff, will testify before a Senate committee amid escalations in the war with Iran in recent days.

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.

Senators are preparing to grill Defense Secretary Pete Hegseth over the U.S. war against Iran. Hegseth and other officials are appearing before the Senate Appropriations Committee…