I think they should have in rotation Presidents for the entire Korea once from North and once fron south, each for five years. The most belligerent of the two to have their President first. But to start with, the armies of each countries be simultaneously given one years leave compulsoraly, before the belligerent President takes over.. Then only half of each side's army be called to duty after their one year's leave. They stay on for one year. Then sent on one year's holiday. Next only quarter of ecah side's army be called.By then the matter will have settled.
As for Kashmir, the entire Kashmir should be made independant. And including Nepal there should be five independant countries in the subcontinent, one more than the present four and number five is sso good that there will be peace.