British Prime Minister Keir Starmer admitted to making a mistake by appointing Peter Mandelson as the UK envoy to Washington amid a scandal involving Jeffrey Epstein. Starmer's popularity has declined, and he faces calls to resign following revelations about Mandelson's failed security checks. Starmer has initiated a review of the vetting process and sacked the top civil servant in the Foreign Office. Despite the controversy, some ministers support Starmer, but polls indicate he is among the most unpopular prime ministers in British history.