NK doesn't have to abandon the nukes to have peace with South Korea. As it has abandoned re-unification, and now recognises South Korea as an independent state, they could move on to a hot and cold "hostile" relation like Pakistan and India, who have learnt to tolerate each other.
Yes, but I guess it was a poor example. I was thinking that technically, they aren't at war all the time. Every decade or two, they declare a war and fight each other, and then settle. In between they even talk with each other civilly.
