February 21
15:15
2016
London Mayor Boris Johnson has long been both ally and nemesis to Britain's Prime Minister David Cameron but dealt his old friend the heaviest blow yet Sunday by backing the campaign to leave the EU. The leave campaign had lacked a unifying figurehead but Johnson's support is a major boost for them — and a significant blow for Cameron, who he could eventually succeed as Conservative leader. With his shock of blond hair and frequent gaffes, Johnson, 51, is one of Britain's most recognisable politicians, known to millions simply as Boris.