Prince Edward, the Duke of Edinburgh, has attended the state funeral of former U.S. President Jimmy Carter on behalf of the British monarchy.The 60-year-old royal stepped out for the solemn service, held at the Washington National Cathedral

The Duke of Edinburgh, 60, sat next to Canadian Prime Minister Justin Trudeau inside the Washington National Cathedral. He is the only royal in attendance at the state funeral today. It's as yet unclear if he will carry out any other engagements while in the United States.