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Theresa May, U.K. prime minister, reacts as she delivers a speech announcing her resignation outside number 10 Downing Street in London, U.K., on Friday, May 24, 2019. May said she will step down on June 7. Photographer: Chris J. Ratcliffe/Bloomberg via Getty Images

Theresa May, U.K. prime minister, reacts as she delivers a speech announcing her resignation outside number 10 Downing Street in London, U.K., on Friday, May 24, 2019. May said she will step down on June 7. Photographer: Chris J. Ratcliffe/Bloomberg via Getty Images