With hopes of making the second summit a success,... officials from Pyeongyang and Washington are about to get busy in discussing the details and agenda for the meeting.<br />Park Hee-jun reports. North Korea and the U.S. are expected to begin their second round of negotiations as early as Thursday,... to discuss the agenda for their upcoming summit.<br />According to the Washington Post,... U.S. Special Representative for North Korea Stephen Biegun arrived in Hanoi late Wednesday evening.<br />The report says Biegun will hold talks with his counterpart Kim Hyok-chol,... to clinch a detailed agreement that satisfies President Trump,... and withstands the concerns of hardliners who warn that the North is not to be trusted.<br /><br />North Korea's special representative for U.S. Affairs of the State Affairs Commission, Kim Hyok-chol also arrived in the Vietnamese capital on the same day after flying via Beijing.<br />He was accompanied by Kim Song-hye,... head of the unification strategy office at the United Front Department,... and Choe Kang-il,... the acting director-general for the foreign ministry's North American affairs department.<br /><br />In their first meeting in Pyeongyang earlier this month,... the two sides reportedly discussed the North's shutdown of its Yeongbyeon nuclear complex and Washington's corresponding measures-- setting up a joint liaison office, declaring an end to the Korean War, and the easing of sanctions.<br />Biegun revealed afterwards that they did set the summit agenda,... but have yet to decide on the details.<br />With only a week remaining until the second North Korea-U.S. summit,... the two sides are expected to sort out those details,... and lay the groundwork for the Hanoi Declaration to be adopted by Kim Jong-un and President Trump.<br /><br />Park Hee-jun, Arirang News. <br />