LONDON—Prime Minister Theresa May on Tuesday said the U.K. intends to leave the European Union’s single market, outlining a plan for a clear break from the bloc and answering the biggest open question about her vision for Britain’s future. In her most detailed speech yet, Mrs. May said the U.K. wouldn’t seek a new relationship that was “half-in, half-out” of the EU. It would no longer abide by the bloc’s immigration rules or be...

Source: Wall Street Journal January 17, 2017 12:20 UTC