I believe everyone except Trump and the White House saw this coming, but North Korea made it fairly clear last night that they will not be giving up their nuclear weapons.
After withdrawing from talks with South Korea yesterday evening, Kim Jong Un expanded on this threat to cancel the upcoming meeting Trump by saying he will not meet with him if giving up their nuclear weapons is part of the discussion.
"If the Trump Administration is genuinely committed to improving NK-US relations and come out to the NK-US summit, they will receive a deserving response," Kim Kye-gwan, First Vice Minister of the Ministry of Foreign Affairs, was quoted as saying by the official KCNA news agency.
"But if they try to push us into the corner and force only unilateral nuclear abandonment, we will no longer be interested in that kind of talks and will have to reconsider whether we will accept the upcoming NK-US summit."
I don't think anyone expected North Korea would give up their weapons unilaterally, however the North's statement also said they're not interested in trade or economic aide from the United States which is all we can really give them in return.
The statement also said Trump will remain a "failed leader" if he behaves the way past American presidents have.
Now, if you read the between the lines here, I think it's clear that Kim Jong Un has been playing Trump from the beginning and he's still trying to play him into a meeting in which Kim Jong Un does not intend to give up anything. The exact wording of their statements seem designed to goad Trump into proving himself while ultimately owning himself.
Trump has already given Kim Jong Un what he desires: praise and respect as an equal head of state. A face-to-face meeting will only cement that and nothing else, but Trump may go through with it anyway because he's so desperate for a photo op and a headline. Trump may be more thirsty for a meeting than Kim Jong Un is.
Unfortunately for Trump, a meeting by itself won't enough for a Nobel Prize.