North Korean uncontrolled belligerence has the potential for global catastrophe. It present one of the major challenges not only for the US but equally for China South Korea and Japan. Any miscalculation could lead to carnage across the very much militarized DMZ.
In his recent article "Reunification Only Way to Defuse Korea Crisis", John Bolton posits a plausible albeit perhaps overdue solution that could be acceptable to both the US and China. Of course the current regime would resist especially now that is within a hair-breath of nuclear armed ICBM capability.
Yet it is an sensible suggestion for a very difficult world problem.
Alas, what are the alternatives?