Kim is in a difficult position. At the end of the day, he serves at the pleasure of his military. He has to keep them happy or he is history. The senior military officers of North Korea are a protected class---there are none of them dining on bark soup (in reality things have improved for the general populace as well).

Those same officers are not advantaged by anything that has been recently discussed with either the US or South Korea. Any reduction in hostility between those entities reduces the importance of the military--and they aren't much drawn to such an outcome.

I have seen this same issue play out in China--the last time when the Chinese "captured" a Navy spy plane in 2001. Zhu Rongji the Prime Minister at the time allowed the Military to thump their chests with great bravado for weeks, making the front page of the daily papers (I was there at the time) as they figuratively brandished their power and displayed their importance.

For any hope of normalization of relations with North Korea Kim has to figure out a way of convincing his military they will retain their elevated state---and that is going to be extremely difficult.