More than you will EVER know, you idiotic old wannabe commie.
Japan and South Korea are more than capable of food self-sufficiency (both with much higher population density than North Korea). They abandoned that as a national goal because both are modern, mature economies and can import the components of a varied and often changing diet more cheaply than relying on domestic production of certain foods - of course. I would explain to you how changing demographics also plays into this, but you are clearly too stupid to grasp the concept. North Korea on the other hand, has seen upwards of a million of its people starve to death, sometimes resorting to canabalism, and are physically shrinking all due to the inept and shamelessly corrupt regime abusing those very people.
Give it up, fool. History has long since passed you by and it ain't comin' back around again to pick you up.