Four thousand tanks, if they all run, and a million men, could roll pretty far into the south before a solid defense could be mounted. North needs free food, and a working economy. What’s not to like about the south.
I also think that China knew exactly what NK was going to do. There's no way this would happen without their approval and the fact that SK so quickly issued a denial of the placement of tactical nukes confirms that know it too.
Of course a weak USA doesn't help either. There isn't a doubt in my mind that Obama would leave the south out to dry in a heartbeat and both SK and China know this too.
Well, we know that N. Korea would never lie to US.
Thanks alot, slick Willie.