South Korea's deputy chief of the National Security Office Kim Hyun-chong talked with his U.S. counterpart Charles Kupperman on the upcoming Moon-Trump summit.<br />After wrapping up the meeting at the White House on Monday,... Kim didn't reveal exactly what was discussed.<br />But it's likely they worked on the agenda for the April 11th summit.<br />He might have also discussed ways that South Korea could mediate between North Korea and the U.S. on denuclearization.<br />The North is demanding a step-by-step approach... while the U.S. is demanding a full-package denuclearization deal.<br />Kim is expected to further discuss North Korea with members of Congress before leaving on Wednesday. <br /><br />
