Article continues below advertisementDonald Trump is at the center of an extraordinary row over claims he privately promised King Charles quiet support for Andrew Mountbatten-Windsor while publicly distancing himself from the disgraced royal - a move insiders now describe as a "betrayal" as the former prince braces for the most explosive release of U.S. Epstein files to date.Article continues below advertisementSource: MEGADonald Trump allegedly betrayed King Charles.