Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex arrive at the United Nations Headquarters on July 18, 2022 in New York City. Prince Harry, Duke of Sussex is the keynote speaker during the United Nations General assembly to mark the observance of Nelson Mandela International Day where the 2020 U.N. Nelson Mandela Prize will be awarded to Mrs. Marianna Vardinogiannis of Greece and Dr. Morissanda Kouyaté of Guinea.