He also represented the United States at the six-party talks, the failed diplomatic effort in which China, Russia, Japan, the USA and South Korea negotiated with North Korea to give up its nuclear weapons.
But analysts say North Korea will be unwilling to cede its nuclear deterrent unless it is given security guarantees that the U.S. will not try to topple the regime.
This will be the first meeting between Trump and Kim Jong-un.
Yonhap said Kim, who had arrived in Beijing on Tuesday, was traveling with five other North Korean officials.
Kim and South Korean President Moon Jae-in met Saturday at the Panmunjom border truce village, in a surprise bid to salvage the June 12 summit planned for Singapore.
Victor Cha, who was President George W. Bush's top advisor on North Korea and was briefly expected to get Trump's nod as ambassador to South Korea, said Sunday he was now confident the summit will take place.
Quelles sont les émissions en ligne les plus demandées par les utilisateurs?
Les disciplines sportives les plus populaires Les émissions sportives en direct sont de plus en plus accessibles. Récemment, les émissions sportives sont de plus en plus populaires sur Internet.
Officials won't say that the June 12 Singapore summit is back on, but preparations on both sides of the Pacific are proceeding as if it is.
South Korean President Moon Jae-in said on Monday there could be more impromptu talks and summits with North Korea's Kim Jong Un, as US officials sought to revive what would be a historic meeting between President Donald Trump and Kim.
The statement by Seoul's presidential office on Saturday came hours after Trump welcomed North Korea's conciliatory response to his Thursday letter withdrawing from the summit with Kim and said that the meeting might be getting back on track.
"We're looking at 12 June in Singapore".
Koh Yu-hwan, a North Korea expert at Seoul's Dongguk University and a policy adviser to Moon, said the South Korean president wants Kim to accept an alternative approach advocated by Seoul, in which the North's comprehensive commitment and credible actions toward denuclearization are followed by a phased but compressed process of declaration, inspection and verifiable dismantling.
An intelligence assessment compiled by the CIA and described to NBC News by three USA officials concludes that the Kim Jong Un regime is not prepared to let go of its nuclear arsenal, a finding at sharp odds with some of Trump's recent claims. White House officials characterized the letter as a negotiating tactic, created to bring the North back to the table after a provocative statement and a decision to skip planning talks and ignore preparatory phone calls.
Les États-Unis imposent des sanctions sur l'acier et l'aluminium européens
Nul doute que la décision américaine va être au centre des discussions du G7 Finances qui débute jeudi à Whistler au Canada. Le président français Emmanuel Macron comme la chancelière allemande Angela Merkel ont dénoncé une décision " illégale ".
North Korea's mission to the United Nations in NY is its sole diplomatic presence in the United States. But moving beyond several footsteps into the North at Panmunjom would be rare for USA officials.
Before he cancelled the summit, Trump did not rule out an incremental approach that would provide incentives along the way to the North.
A visit to the United States would be the highest-level North Korean official visit since 2000, when late national defence commission first vice chairman Jo Myong Rok visited Washington, South Korea's Unification Ministry said.
Kim believes the summit with Trump will be an opportunity to end decades of confrontation, Moon said.
In addition to the team on North Korea that Pompeo set up previous year when he was Central Intelligence Agency director, he has now enlisted veteran US diplomat Sung Kim to help in the process, a senior USA official said.
He also accompanied Kim Jong Un on both of his recent trips to China to meet President Xi Jinping, and held talks with Pompeo when he travelled to Pyongyang.
Accord trouvé avec Gigi Buffon — PSG
L'ancien pensionnaire du RC Lens "attend le dénouement autour du transfert de Buffon au PSG pour se prononcer sur son avenir ". Pour se décider, le dernier rempart de 25 ans attendrait de connaître l'issue du dossier Buffon.
The meeting, led by White House Deputy Chief of Staff for Operations Joe Hagin on the US side and director of department at the State Affairs Commission and Kim Jong Un's chief secretary Kim Chang Son on the DPRK side, will reportedly discuss "practical issues" surrounding the planned summit in Singapore in talks on Tuesday. He urged Washington and Pyongyang to resolve their differences through "more direct and closer dialogue between their leaders".