A heated Senate hearing erupted as Sen. Chris Van Hollen pressed Defense Secretary Pete Hegseth to explain what the Trump administration considers "winning" in the Iran conflict. Van Hollen questioned claims that Iran's nuclear capabilities had been destroyed, while Hegseth defended the administration's military strategy and insisted Iran had initiated the conflict. Watch the full exchange and the biggest moments from this explosive Capitol Hill hearing.

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…

U.S. Defense Secretary Pete Hegseth and Gen. Dan Caine, Chairman of the Joint Chiefs of Staff, are set to testify before a Senate committee as lawmakers examine the Pentagon's…