Boris Johnson chosen as new U.K. leader, now faces Brexit test

LONDON -- Boris Johnson, Britain's blustering Brexit campaigner, was chosen as the U.K.'s next prime minister on Tuesday, with a resounding mandate from the Conservative Party but conflicting demands from a politically divided country. Johnson is set to become prime minister on Wednesday after winning an election to lead the governing Conservatives. He will have just over three months to make good on his promise to lead the U.K. out of the European Union by Oct. 31. Famed for his bravado, quips