North Korea is often described as having the fourth largest military on the planet. That’s quite an accomplishment for a country of 24 million but the numbers are achieved at the expense of quality and sustainability. The 950,000 personnel in the active military are four percent of the population. When you include reservists who can be called to service in wartime, over 25 percent of the population gets involved. That means the economy, as shabby as it is, pretty much shuts down until the war is over. Fortunately, that won’t take long. Since North Korea has drawn on its war reserves of food and fuel over the last decade (because of bad harvests and little cash to buy oil), it’s likely that North Korea would be out of fuel for military operations after about a month and food shortages for the entire population would quickly become catastrophic. That’s because the military takes over much of the vehicle transport in wartime and enemy air attacks would cripple the railroads. Without transportation, food cannot be moved to areas that don’t produce much of it. North Korea are in a very difficult situation domestically because of the growing famine. They have a real shortage of food.
(http://www.sunshinecoastdaily.com.au/news/what-food-crisis-n-korea-build-big-ben-eiffel-towe/1848758/)