President Moon Jae - in speaks with US President Donald Trump on Friday . YonhapPresident Moon Jae - in and US President Donald Trump are to meet Tuesday , as Seoul seeks to play the mediator between Pyongyang and Washington . The meeting comes amid Pyongyang threats to call off the summit between Trump and North Korean leader Kim Jong - un , scheduled to be held in Singapore on June 12 .   Moon and Trump are expected to focus on the recent changes in Pyongyang ’ s tone and denuclearization plans for North Korea , continuing on from their telephone conversation on Friday . According to Cheong Wa Dae , the two leaders discussed “ various responses North Korea has recently shown ” and agreed to cooperate in preparing for the US - North Korea summit . North Korea has recently resumed its verbal attacks on the South and the US , taking issues with South Korea - US joint military exercises and a US official ’ s comments on a denuclearization model . The North has accused Seoul of violating the Panmunjeom Declaration , and threatened to rethink the scheduled Kim - Trump summit at the mention of the Libya model of denuclearization . North Korea ’ s criticism of Seoul and Washington continued Monday , through an article carried by the state - run Rodong Sinmun . In an apparent jab at Moon ’ s US trip , the article claimed that relying on foreign powers was “ path to ruination . ” The article also criticized the US for offering economic aid , saying that a number of countries have been fooled into believing that aid is essential in achieving economic growth . In their fifth meeting , Moon and Trump will hold a one - on - one meeting around noon Tuesday , and hold a luncheon meeting with key aides in attendance . According to sources , plans for North Korea ‘ s denuclearization process will also be high on the agenda . The US maintains that the process must be swift , and that it will not make any concessions until the process is completed . North Korea , in contrast , is said to favor the so - called “ action for action ” approach with rewards for each phase of the denuclearization process . Ahead of Tuesday ’ s summit meeting , Moon is scheduled to meet with top US national security and foreign affairs policymakers to seek closer collaboration in the weeks leading up to the US - North Korea summit . With Pyongyang reverting to criticizing Seoul and Washington , the Moon administration has reiterated its self - appointed matchmaker role between Pyongyang and the US . On Thursday , Seoul ’ s National Security Council stressed the role of mediator in the US - North Korea talks , saying that the government will “ mediate through diverse South Korea - US , South - North channels . ” By Choi He - suk ( cheesuk @ heraldcorp . com ) [ 코리아 헤럴드 ] [ K - POP HERALD ] [ 페이스북 ] <ⓒ KoreaHerald ( www . koreaherald . com ) 무단 전재 및 재 배포 금지 >