As Brexit challenge looms, embattled PM May vows to fight on

By William JamesLONDON (Reuters) - Britain's Theresa May will promise to fight on as prime minister and pursue bold domestic reform despite her diminished authority in a speech this week relaunching her leadership after 12 tumultuous months in power.As her minority government prepares to start the difficult task of passing Brexit through parliament, May will remind Britons of her promise to build a fairer society, seeking to repair a reputation damaged by an ill-judged snap election.Almost one y