My own view is colored by the PAST HISTORY of North Korea’s “agreements” ( note the quotes ) with past Presidents ( e.g. Bill Clinton via Madeline Albright ).
They did not keep their agreements then — why should they believe them now? As the saying goes : “Once Bitten, Twice Shy”.
I just hope we don’t keep our guard down just because of a smile and a handshake and some verbal assurances on their part.
Consider this process a treatment, not a cure. But you’ll never reach a cure if you never treat the problem. And no one other than a feckless Democrat or State Department troll, but there I repeat myself, is blind to negotiating partners possibly reneging.