Keir Starmer's former chief of staff publicly acknowledged that recommending Peter Mandelson for the U.S. ambassador position was a serious error. The comments come as the UK's political landscape continues to face increasing scrutiny and pressure.

U.K. Prime Minister Keir Starmer’s former chief of staff says that he made a “serious mistake” by recommending Peter Mandelson’s appointment as U.K. ambassador to the United States