Trump officially invited Moon to the United States.
SOUTH Korea's President Moon Jae-in is to send special envoys to China to discuss issues concerning a U.S. missile defense system and North Korea.
A big challenge will be U.S. President Donald Trump, who has proven himself unconventional in his approach to North Korea, swinging between intense pressure and threats and offers to talk.
Three-way talks between South Korea, Japan and China were on the cards last fall, but did not take place due to the massive corruption scandal that brought down former president Park Geun-hye. With Seoul now sharing the latter view, Beijing will feel even less pressure to seriously tighten the screws on North Korea, as Trump has been urging. Moon's aides say he will commute from his home for the first few days as workers finish furnishing the Blue House residential space for him.
Japan has been concerned that Moon will take a tough line on feuds stemming from the bitter legacy of its 1910-1945 colonisation of the Korean peninsula and could fray ties at a time when cooperation on North Korea was vital.
The two also discussed the issue of the deployment of the Terminal High-Altitude Area Defense (THAAD) missile defense system on the Korean peninsula.
"We hope the president will present his vision and government philosophy by working for coexistence between South Korea and the North, working for the peace of the Korean people and for reconciliation between the two Koreas". He is reportedly against the aggressive military measures Trump has threatened to deploy if North Korea does not back down from vigorously expanding its nuclear regime.
A Downing Street spokesman said the two leaders vowed to remain "close partners" on issues including defence and security.
The U.S. Central Intelli-gence Agency (CIA), meanwhile, chose the day after Moon's election to announce it had established a Korea Mission Center "to harness the full resources, capabilities, and authorities of the Agency in addressing the nuclear and ballistic missile threat posed by North Korea".
Moon also called China's Xi Jinping on Wednesday and spoke to the Chinese leader for 40 minutes.
He did not elaborate, but Yoon also said the two leaders agreed that all sides must work together to ease tensions over North Korea's weapons program.
Contrary to his conservative predecessors, Moon has also expressed his desire to visit North Korea and establish a dialogue with Kim Jong Un, provided the conditions leading up to the meeting are favorable, according to a U.S. News report.