Especially with a nut job like Drumpf at the helm. It’d be great to see a united Korea though.

Ending the war is one thing. Reunion, I don't see that happening in the next decades. Don't forget how much poverty and indoctrination is there. And who would govern the combined Korea? The two governments are worlds apart.

Ending the war might enable them to grow towards each other. But that will take decades.

Not going to happen. China and Russia won't let it happen, since the DPRK is a buffer state. Kim has his nukes and doesn't want to lose power. Basically Soth Korea doesn't have any allies in the area, aside from US which has bases in Guam and Okinawa and has been unreliable under the current administration.