1-on-1 with the UK ambassador to U.S., Mandelson's replacement, ahead of the King's visit

NBC News' Andrea Mitchell sits down with the U.K.’s newest ambassador to the U.S., Sir Christian Turner. They discuss his challenges in taking over for Peter Mandelson after his arrest in relation to his Epstein ties, the war in Iran, and King Charles' first state visit to the U.S. since taking the throne.