Boris Johnson, London’s mayor and one of the U.K.’s most prominent politicians, said he would campaign for a British exit from the European Union, delivering a blow to Prime Minister David Cameron as he ramps up his push to keep the U.K.
Boris Johnson, London’s mayor and one of the U.K.’s most prominent politicians, said he would campaign for a British exit from the European Union, delivering a blow to Prime Minister David Cameron as he ramps up his push to keep the U.K.