No way SK is going to convince NK to abandon nukes. The point of having nukes is not to intimidate SK or JP. It is to deter the US.
That's also how I see it. If they want long-lasting peace, it will be a nuclear-enforced one. The DPRK has witnessed way too many times in its lifetime what happens to countries that naively give up their nukes. The atom is still one of the best guarantors of national sovereignty.
Especially with a nut job like Drumpf at the helm. It’d be great to see a united Korea though.