This is a good analysis of what could derail the Korea deal. From Ted Snider at antiwar.com:
A denuclearization deal with North Korea is more within reach than anyone could have thought possible a very short time ago. Thanks to the tireless diplomatic work of Moon Jae In of South Korea and the unexpectedly adept diplomatic work of Kim Jong Un of North Korea, a joint statement between North Korea and the United States exists and the impossible is suddenly under way.
Those who dismiss the the joint agreement as vague and vacuous and light on detail forget how far the language of the joint declaration has traveled since Trump’s first “fire and fury like the world has never seen” attempt at diplomacy. They also commit the error of comparing the joint statement to history’s final agreements rather than to other first meetings. The diplomacy may also have more content than the joint statement reveals, since some steps seem to have been negotiated that have not yet been made public.
The blueprint for any eventual nuclear deal has long been clear. In fact, thanks to recent revelations by Joel S. Wit who worked on the Agreed Framework with North Korea and who was one of a very few people to take part in informal meetings with North Korean officials in 2013, it is now known that that blueprint has been seriously laid out on the workbench for much longer than anyone thought.
Wit says that Kim Jong UN always intended North Korea’s nuclear weapons program as a deterrent against American bullying and aggression. As early as June of 2013, North Korea’s National Defense Commission declared that it was willing to negotiate denuclearization. The National Defense Commission is chaired by Kim Jong UN himself. And as early as 2013, the formula was clear: North Korea would erase its nuclear weapons program in exchange for U.S. guarantees that it would cease its “hostile policy” of political, economic and security threats.
To continue reading: The Three Landmines That Could Kill the Korea Deal