JMHO, I believe the Nork’s are watching our politics and the slams against Prez Trump by the Rats and the media. They may be waiting to see what happens in the 2020 election to see if they have a Rat Prez to deal with. In other words back to dealing with a Zero type of Prez. Just sayin’
Just remember, as well, two things:
First off NK is to some degree alligned with China. It remains to be seem, whether Trump is any different toward China than all the other presidents who sold us out for the last generation and a half.
Not so far, despite sounding like he would be, initially. But we will see.
Second, China and North Korea are both Asian.
As such, they do not negotiate the same way, we so.
They just don’t. Ever.
With US politics doing flip flops every four years, it’s amazing we get any agreement with other countries.