SINGAPORE—Senior U.S. and North Korean officials huddled for last-minute negotiations Monday, trying to iron out differences ahead of a summit meeting between the two countries’ leaders, while America’s top diplomat said Washington’s position was “clear and unchanged.”
At the end of a day during which envoys from the two sides spent hours talking in a conference room at the Ritz-Carlton hotel, U.S. Secretary of State Mike Pompeo said talks were “moving quite rapidly” as President Donald Trump prepared to meet Kim Jong Un on...