WASHINGTON – Joe Kasper is out as Defense Secretary Pete Hegseth’s chief of staff, the fourth top official to be fired or reassigned in the last week amid political turmoil at the Pentagon.

Defense Secretary Pete Hegseth’s chief of staff departed his post Thursday, he said, the latest twist in an extended period of turmoil at the Pentagon that has included infighting among Hegseth ...

By Greg Jaffe and Helene Cooper Reporting from Washington Defense Secretary Pete Hegseth arrived at the Pentagon in January with almost no government experience and huge ambitions to remake the ...