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By John Whitesides PHILADELPHIA (Reuters) - U.S. Democrats open a four-day convention on Monday to nominate Hillary Clinton for the White House on a divisive note, with a furor over embarrassing leaked emails threatening to derail what they hoped would be a message of party unity. Democratic National Committee head Debbie Wasserman Schultz resigned on Sunday, effective at the end of the convention, after more than 19,000 DNC emails showed party officials working to undermine the insurgent presidential campaign of Clinton's primary rival, U.S. Senator Bernie Sanders. The disclosure angered Sanders' supporters and complicated Democratic plans to portray a convention image of no-drama competence in contrast to the volatile Donald Trump, who was formally nominated for president at a chaotic Republican convention in Cleveland last week.
By Amanda Ferguson BELFAST (Reuters) - Prime Minister Theresa May visited Northern Ireland on Monday in a bid to allay fears about the impact of the United Kingdom's vote to leave the European Union on the British province's peace process, its border with Ireland and billions of pounds of EU funding. The June 23 Brexit vote has raised questions over the future of the open border between Northern Ireland and the Irish Republic, which will become Britain's only land frontier with the bloc. Concerns have also been raised about the legal status of the 1998 Good Friday Agreement, which ended three decades of fighting between Catholic nationalists seeking a united Ireland and Protestant unionists who wanted to keep Northern Ireland British.