The top nuclear envoys of Seoul and Washington will meet in the coming days... to discuss what happened at the Hanoi summit and plan their next moves.<br /> Lee Do-hoon, special representative for Korean Peninsula Peace and Security Affairs,... is expected to hold talks with his U.S. counterpart Stephen Biegun, in Washington -- but no date has been officially announced.<br />South Korea and the U.S. have agreed to coordinate their efforts... to push nuclear negotiations forward.<br />Presidents Moon Jae-in and Donald Trump also agreed to meet as early as possible for a summit... to discuss their strategy on North Korea. <br />