But how to get the product to customers? North Korea's southern border is vigilantly monitored and carefully kept human-free--so much so that it has turned into a surprise wildlife haven. To the north are China and Russia, where Pyongyang has long smuggled illicit wares. Beyond that, it's pretty tough for an isolated country to move product. Diplomats and embassies, it turns out, are the perfect cover for a nation hard up for cash, already producing drugs, and low on scruples. For a nation built around Juche, the principle of self-reliance, imitating criminal networks might as well be second nature.