This has not stopped South Korean media from speculating.
Last week, Trump accepted an invitation to meet Kim Jong-un "as soon as possible" to begin discussions about potential denuclearization, with North Korea agreeing to refrain from further nuclear tests in the near future.
Trump does not care if North Korea's president feels good about some political maneuver. "The president has been very clear in what the objective is here". But he needs the assurance that the United States will never resort to nuclear weapons either, and only North Korean nuclear weapons can provide the necessary deterrence.
The administration officials credited toughened economic sanctions imposed by the United Nations, and pushed by the United States, with helping bring Kim to the brink of negotiations.
A chain of events had been taking place recently, especially since the visit of a high-level North Korean delegation to the Pyeongchang Olympic Winter games, in which Kim Yo-jong, the sister of the North Korean leader, was a key member. "It's impacted his conduct", Shah said.
South Korea's National Security Office chief Chung Eui-yong who led the delegation will head to Russian Federation on Tuesday after meeting with Chinese President Xi Jinping on Monday, the Blue House said. A meeting like that would be kind of an afterthought after things are negotiated.
You may deplore this kind of thinking, but it is entirely rational and it is at the heart of North Korea's strategy. "And that's a little worrisome", said Sen. On Sunday, Trump's senior officials were out in full-force on the Sunday news shows to support the President's stance, while emphasizing that the US will not back down from its hardline stance before the talks. "Has North Korea responded?"
The CIA director assured Brennan and CBS's viewers that "this administration has its eyes wide open and the whole time this conversation takes place, the pressure will continue to mount on North Korea".
While an actual in-person meeting between a sitting USA president and North Korea's leader would be a novel development, an agreement between them on denuclearization would not be.
Trump last week agreed to meet with Kim by the end of May to discuss Pyongyang's denuclearisation - which it put on the table in exchange for security guarantees - and predicted the talks would be a "tremendous success". "North Korea made several promises, and we hope that they stick to those promises, and if so, the meeting will go on as planned".
But the North Koreans are unpredictable, and Trump meeting with them could pose a significant security risk. We've see, for instance, that Office Number 39 - which is the Kim family slush fund - is running out of cash according to Chinese sources, and South Koreans say that the regime in Pyongyang is not going to have any more foreign currency reserves by October at the current rate of depletion. Shah was on ABC's "This Week".