Gavin Grey: UK correspondent on King Charles defending NATO in address to US

King Charles reiterated the importance of NATO and other alliances with the US in a 'contested world' as part of his toast at a White House state banquet. Charles’s appearance before the joint session of Congress was the first royal address of this type in over 30 years -and the royals are set to spend the next couple of days in the US to mark the 250th anniversary of independence.  UK correspondent Gavin Grey says Trump claimed King Charles 'agreed' that Iran must not have a nuclear weapon, and Buckingham Palace has since cleared up the misunderstanding.  LISTEN ABOVESee omnystudio.com/listener for privacy information.