As already pointed out, the signed statement does not have any mechanisms in place to ensure that they denuclearize ( like the iran deal did).
I'm trying not to be a hater or come of as a hater and just looking at the situation on it's merits.
I'm still convinced a few months or years from now we will get a news story that they found out the North Koreans are building a new test site and haven't gotten rid of their weapons and then we're back to square one.
There is no logical reason for North Korea to get rid of all it's weapons. Especially after Bolton made the threat essentially of reminding them of what happened to Qaddafi after denuclearization. I think North Korea will get some money and aid from the US and then start the fukkery again. They've done it before.
But on the chance that I'm wrong, we will see. I'm in a wait and see mode about the whole thing.