The president told reporters in the Oval Office on Wednesday that it remains a question whether Kim is willing to denuclearize, but that he thinks the North Korean leader wants to "do something".
U.S. President Donald Trump is expected to visit Japan in May to meet with the country's new emperor and then return in June for a G20 gathering, a White House official said on Wednesday after a phone call between Trump and Japanese Prime Minister Shinzo Abe. The sanctions are on in full. "I'd love to be able to, but in order to do that, we have to do something that's meaningful on the other side".
"I wouldn't be surprised to see something work out", Trump added.
The news comes ahead of Trump's upcoming summit with North Korean leader Kim Jong Un in Hanoi, which is set to take place next week.
"But Kim's style is a lot more popular among customers", he said.
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Moon Chung-in, a special adviser to South Korea's president, told Bloomberg last week that Kim had agreed to close the Yongbyon Nuclear Scientific Research Center in the mountains north of Pyongyang and allow inspections of the site.
Trump's administration has been working with the political leadership of both Japan and South Korea in advance of his summit with Kim, as they work to help achieve the USA goal of convincing North Korea to abandon its nuclear weapons.
When Trump and Kim met in Singapore, it was the first ever meeting between a sitting USA president and a North Korean leader.
Traveling with Biegun are officials specializing in economic development and North Korea in the U.S. National Security Council, the source said.
Biegun held three days of talks in Pyongyang this month which he said would include discussion of such corresponding steps, but the State Department had offered no sign of any specific progress.
Biegun said after that trip his talks in North Korea had been "productive" but there was "hard work to do" before the summit.