Starmer apologized to Epstein's victims last week and said he was sorry for “having believed Mandelson’s lies.”

British Prime Minister Keir Starmer's chief of staff resigned over the furor surrounding the appointment of Peter Mandelson as the U.K. ambassador to the U.S.

Morgan McSweeney said he took responsibility for advising the British prime minister to appoint Peter Mandelson despite his ties to Jeffrey Epstein.