Boris Johnson has launched a scathing attack on Theresa May’s Brexit strategy, saying the “dream is dying, suffocated by needless self-doubt”.
In his letter resigning as foreign secretary he claimed the prime minister was leading the UK into a “semi-Brexit” with the “status of a colony”.
His resignation came hours after Brexit Secretary David Davis quit the cabinet.
Mrs May insists her plans are the “the best way to honour” the Brexit vote, amid a deepening political crisis.
he BBC’s political editor Laura Kuenssberg said Mr Johnson’s exit had turned an “embarrassing and difficult situation for the PM into potentially a full-blown crisis”, fuelling speculation about a leadership challenge.
Mrs May’s official spokesman said she would fight any attempt to oust her if the required 48 Tory MPs called for a contest.