"We're going to announce it very soon. We'll be announcing early next week and they very much want the meeting," Trump told reporters in the White House.

"I think most of you know where the location is. I don't think it's a great secret," he added, touting what he called the "tremendous progress" made with Pyongyang.

Trump held a historic first summit with Kim in Singapore last June to try to persuade the reclusive North Korean strongman to give up the country's nuclear weapons.

The American president has come under fire at home from critics who say that Kim has not taken enough concrete steps toward denuclearization to be given a second summit.

The US special representative on North Korea, Stephen Biegun, was to say in a speech Thursday that the United States remains "clear-eyed" and wants a firm accounting of Pyongyang's weapons programs as part of any deal.

"Before the process of denuclearization can be final, we must have a complete understanding of the full extent of the North Korean WMD and missile programs through a comprehensive declaration," Biegun was to say in a speech at Stanford University, according to excerpts.

"We must reach agreement on expert access and monitoring mechanisms of key sites to international standards, and ultimately ensure the removal or destruction of stockpiles of fissile material, weapons, missiles, launchers and other weapons of mass destruction."

If North Korea follows through, "the United States, will, in return, exceed anything previously thought possible," Biegun was to say.

US Director of National Intelligence Dan Coats said Tuesday that North Korea would resist pressure because its leaders see nuclear weapons capability as "critical to regime survival."

Trump on Thursday pushed back against intelligence leaders who publicly disagree with his foreign policy positions on North Korea, Iran and Syria.

"I disagree with certain things that they said, I think I'm right," he said. "Time will prove me right probably."