Prime Minister Keir Starmer expressed regret on Wednesday for appointing Peter Mandelson as UK ambassador to Washington, saying the Labour veteran had created a "litany of deceit" about his ties to U.S. sex offender Jeffrey Epstein. Starmer ceded to pressure from the opposition Conservative Party to release documents on how Mandelson was appointed, and was forced to water down an attempt to limit the scope of that disclosure after facing a revolt in his own Labour Party. Mandelson, a government