An old but memorable view holds that “an ambassador is an honest gentleman sent to lie abroad for the good of his country.” If true, the British ambassador to the United States has utterly failed to do his duty. Instead, Sir Christian Turner told a very unfortunate truth about Great Britain and its tattered ties with America. His words became public just as King Charles and Queen Camilla arrived in Washington to try to mend relations with President Trump, who has publicly bashed Prime Minister Keir Starmer for refusing to support the US war effort in Iran. According to parts...