British Prime Minister Keir Starmer conceded on Monday that he had lost the support of his rank-and-file Labour Party members in Parliament and that he will step down once his successor as party leader is chosen, possibly as soon as the middle of July. Andy Burnham, the former mayor of Greater Manchester whose resounding victory in a special UK election last week set in motion Starmer’s resignation, has confirmed he will put himself forward to be his successor. Burnham is seen as the...