North Korea’s lead negotiator in nuclear diplomacy with the United States is due to hold talks with Secretary of State Mike Pompeo and could also meet President Donald Trump on Friday during a visit aimed at clearing the way for a second U.S.-North Korea summit.
Separately, a diplomatic source said envoys from the United States and North Korea were holding talks in Sweden aimed at ending the stand-off between the two countries. The meeting, which started on Thursday and will continue over the weekend, has been planned in secret for months.
WATCH: North Korean official arrives in U.S. for talk with Pompeo
The source said the delegations included North Korea’s vice foreign minister, Choe Son Hui and Stephen Biegun, the U.S. special representative for North Korea.
“After the meeting in Singapore things have ground to a halt. The purpose of this meeting is to inject some energy and to take steps forward in the relations between U.S. and North Korea,” the source said.
North Korea’s lead negociator Kim Yong Chol arrived in Washington on Thursday evening for his first visit since last June, ahead of a landmark meeting between Trump and North Korean leader Kim Jong Un in Singapore. Efforts since then to get Pyongyang to denuclearize appear to have stalled.
The State Department said Pompeo would meet Kim Yong Chol in Washington at 11 a.m. ET.
Hours before Kim Yong Chol’s arrival, Trump – who declared the day after the June 12 Singapore summit that the nuclear threat posed by North Korea was over – unveiled a revamped U.S. missile defense strategy that singled out the country as an ongoing and “extraordinary threat.”
Kim Yong Chol, a hardline former spy chief, could also go to see Trump at the White House, a person familiar with the matter said.
The visit is a sign of potential movement in a diplomatic process that has struggled for months and, according to the source, could yield an announcement of plans for another summit.
WATCH: North Korean official Kim Yong Chol departs for a meeting with President Trump
However, there has been no indication of any narrowing of differences over U.S. demands that North Korea abandon a nuclear weapons program that threatens the United States or over Pyongyang’s demand for a lifting of punishing sanctions.
Pompeo had planned to meet Kim Yong Chol to discuss a second summit last November, but the meeting was postponed at the last moment. Kim Jong Un said in a New Year speech he was willing to meet Trump “at any time.”
Lack of tangible progress
On his last visit to Washington, Kim Yong Chol delivered a letter from Kim Jong Un to Trump that opened the way for the summit in Singapore.
That meeting yielded a vague pledge from the North Korean leader to work towards denuclearization of the Korean peninsula, which led Trump to declare that there was “no longer a nuclear threat from North Korea.”
Despite the lack of tangible progress since, Trump has been keen to hold another summit.
WATCH: ‘We’re doing very well’: Trump on talks with North Korea (Jan. 6)
CNN quoted a source familiar with the U.S.-North Korea talks as saying that Kim Yong Chol would be carrying a new letter for Trump.
U.S.-based analysts said that the North Koreans would likely be seeking a clearer message from the Trump administration on any concessions it may be willing to make.
“The North Koreans need a real indication of what the U.S. is willing to put on the table,” said Jenny Town, a North Korea expert at 38 North, a Washington-based think tank.
WATCH: North Korean leader says ‘new path’ inevitable if U.S. demands unilateral action
South Korean Foreign Minister Kang Kyung-wha said on Wednesday that if North Korea took concrete steps toward abandoning its weapons programs, Washington could offer a formal end to the 1950-53 Korean War, humanitarian aid or a permanent channel for bilateral dialog.
Victor Cha, a former White House adviser on Asia under President George W. Bush, suggested that Trump may be so desperate for a policy “win” that he could be vulnerable to a bad deal with North Korea.
WATCH: U.N. chief says ‘high time’ for US-North Korea talks to ‘start again seriously’
“I worry that the timing works to North Korea’s benefit,” Cha said, citing pressures on Trump such as the partial U.S. government shutdown and the ongoing investigation into alleged Russian ties to Trump’s 2016 presidential campaign.
Earlier this month, Trump defended the stuttering progress on North Korea by saying that Pyongyang had stopped missile and bomb testing and if it had not been for his administration “you’d be having a nice big fat war in Asia.”
Communist-ruled Vietnam, which has good relations with both the United States and North Korea, has been widely touted as the most likely venue for a second Trump-Kim summit.