Donald Trump says he has “largely solved” issues with North Korea and revealed Kim Jong Un now has his direct phone number.
The comments come after the two leaders met earlier this week at an historic summit in Singapore, where the North Korean leader signed a document committing to “complete denuclearisation”.
Speaking at a White House news conference on Friday, the US president said former leader Barack Obama had warned him of Pyongyang’s nuclear weapons programme, saying it was the “most dangerous problem” for the United States.
“I have solved that problem,” said the billionaire tycoon. “That problem is largely solved.”
Mr Trump also said he was due to call Mr Kim on Sunday after revealing at the press conference that he had given his North Korean counterpart his direct line.
When asked in a Fox News interview about his plans for Father’s Day on Sunday, the US leader said: “I’m going to be actually calling North Korea.”
In the interview, he went on to talk about the “great relationship” between the two leaders and spoke admirably about Mr Kim’s “strong” leadership.
“He’s the head of a country – I mean he’s the strong head, don’t let anyone think any different,” said Mr Trump. “He speaks and his people sit up to attention – I want my people to do the same.
“We have a really great relationship for the first time – no president’s ever had this… I get hit because I went there, I gave him credibility.”
The North Korea remarks follow Mr Trump announcing a 25% tariff on $50bn in Chinese imports.
At the news conference, the American leader also disputed findings by the Justice Department that former FBI director James Comey’s handling of the Hilary Clinton probe into her emails was not politically motivated.
He said the FBI was biased “at the top level” and “plotting against my election”.