They did thise things too under Clinton tactically and temporarily and then reverted to cheating, their usual dishonesty and shell gamesramping up the provocations again because they want another round of goodies and appeasement. This time will be no different and will turn out the same. They will be back to launching missiles IMHO by late autumn or early spring, Mark my word.
We may have changed Presidents but they have not and they are who they are, evil, cruel, foul, lying cheating bastards, and they are so with or without DJT. Hell come around after this current round of nonsense runs its course. You can already see Bolton setting the stage for it...
It wont be pretty, unfortunately.
We all know the denuclearizing will be a long process, just by the dangerous nature of nuclear material itself. I expect this to be a bumpy ride, there's no way it can't be. The upside is the meetings continue...and SKorea is moving on this as well. Give it the time it needs...and don't forget there's a lot of people on this side working against Trump being successful in this.