process and lead to a war that actually no country in the region wants to fight. >> reporter: while echoing that basic sentiment, former u.n. ambassador john bolton tells fox news there may be opportunity in this time of transition. >> while this is a period of enormous risk for the peninsula and for the united states, china and others, it's also has the potential opportunity, looking at what our long sought goal has been of the reunification of the korean pen lanes, that's what we need to keep in mind here, that's the strategic opportunity that may be presenting itself. >> much of what we know about kim jong-un comes from a book written by kim jong-il's former suukwi chef a. japanese man who defected back to his native japan under the guise of going there to seek out edible sea urchin for the fareless leader. he went into hiding and wrote a book, he describes kim jong-un as an athlete,