The most useful analysis I’ve seen so far is from Richard Fernandez, who has reviewed the deal with Dr. Robert Ayson of the Australian National University. There are several key issues raised – one is that North Korea’s primary aid lifeline depends upon their nuclear threat:
…there is the circumstance that the nuclear threat is actually Pyongyang’s meal ticket. Giving up its nuclear program is essentially to dismantle its sole means of support. In a really curious type of feedback loop, the more nuclear weapons North Korea has the more of both sanctions and concessions it can hope for. The fewer weapons it has the fewer sanctions and inducements it can expect. North Korea’s past track record suggests it will be loathe to every fully give up its WMD program.
As usual with Richard’s work, RTWT.