Kim Jung mentally Il's artillery can bombard Seoul and he's got lots of men but his gear is old hat and his tech is a few generations behind ours. There are growing reports of moral and dicipline failing. must be kind of hard to see your own people starving to death, all 4 million can't be inhuman robots.
Basically their numbers are a problem but with modern weapons it would be ugly but less of an isuse. numbers are all Kim has on his side and things like FAE cut down on that right fast. The First Gulf War showed what happened when first class T-72's fought the Abrams tanks head to head. Kim's tanks are way below that in scale.
His latest plan to reduce famine is to import giant rabits from Germany. I'm not kidding. In east Germany they grow 20 pound bunnies. Kim thinks breeding these will alieviate the hunger problem. the trouble is that these bunnies need a lot of food to grow to 20 pounds and they can't feed their people, never mind bizarre live stock. it's all a part of Kim's cloud Coo-coo land. (A cookie for the one who knows where that temr was originally used.)