Mark A. Milley
"I should not have been there," Gen. Mark Milley, chairman of the Joint Chiefs of Staff, said in a prerecorded video commencement address.
Military officials also ordered use of two Army National Guard helicopters to intimidate civilians in Washington, D.C., sources told The New York Times.
"Trump’s aides are helping him to push the country closer not to order but to anarchy," the newspaper's editorial board cautioned.
The attack targeted the Iranian-backed Shia militia in Iraq, marking a major escalation in U.S.-Iran tensions.
The ISIS leader was killed during a U.S. raid in northern Syria, President Trump announced Sunday.
The ISIS leader's death is a signature achievement of his presidency, but Trump's official account of the terrorist's downfall has come under scrutiny.
It's the longest such stretch in Pentagon history.