Bolton said Trump was not being played by Kim and was "very well aware of North Korea's patterns of behaviour over decades of negotiating with the United States".
The report contradicts President TrumpDonald John TrumpScaramucci warns Trump must "change tactics now" on trade Trump sought to purchase historic Scottish building for hotel: report Republican wins right to replace Farenthold in Congress MORE's claim that North Korea is no longer a nuclear threat after his meeting with Kim Jong Un in Singapore last month.
The border town of Sinuiju was designated as a special economic zone by then North Korean leader Kim Jong Il, father of Kim Jong Un, back in 2002.
Japanese defense ministry officials were not available for immediate comment.
The US President and North Korea's leader have finally met.
The national security adviser added that "there's nobody involved in this discussion with North Korea in the administration who is overburdened by naïveté".
"It would be wrong if China lifts economic sanctions without any indication of denuclearization from North Korea... but North Korea has made a commitment for complete denuclearization and took some steps proactively", said Yang Moo-jin, a professor at the University of North Korean Studies.
"I made a deal with him".
However, the officials believed North Korea was "positioning itself to extract every concession it can from the Trump administration - while clinging to nuclear weapons it believes are essential to survival", NBC News reported. Meeting with Kim Jong Un was an interesting and very positive experience.
Appearing on CBS's Face the Nation, Bolton said he did not want to comment on the reports or on "anything related to intelligence" - NBC having quoted more than a dozen senior U.S. intelligence officials and the Post four. I went there. So the papers say, "He went", oh, meaning I went to Singapore. "If they have the strategic decision already made to do that and they are cooperative, we can move very quickly.
I'm sure that Secretary of State Mike Pompeo will be discussing this with the North Koreans in the near future about really how to dismantle all of their WMD and ballistic missile programs in a year", Bolton said.
At the same time, USA envoy Sung Kim held talks with North Korean officials on Sunday in the border village of Panmunjom within the demilitarised zone between the North and South Korea, South Korean media reported on Sunday.
"There is absolutely unequivocal evidence that they are trying to deceive the US", the official said.
North Korea has no intention of giving up its entire nuclear stockpile and is instead mulling ways to "conceal" its weapons from the United States, The Washington Post reported on Saturday.
"I don't want a war with North Korea", Graham said.
"We're going to try and proceed to implement what the two leaders agreed to in Singapore, but rather than have a series of reports - things are going better things are not going well, they are concealing this, they're not concealing that - really it doesn't serve the goal of advancing the negotiations", Bolton said Sunday.