Add counterfeiting to Kim Jong-il’s other crimes. Since the late 1980s, North Korea has been quietly making “superdollars,” nearly perfect forgeries of U.S. banknotes, painstakingly re-creating all the necessary inks, threads, fibers, and watermarks. They’re doing a good job — experts have to study the notes closely to detect the forgery. In fact, when a defector brought one to South Korean intelligence officials, they refused to believe it was fake.

Reportedly the Koreans print the currency in Pyongsong and spread it via diplomats and the British criminal underworld. Apparently they’re doing it for income and to undermine the U.S. economy. The North Koreans call these accusations “sheer lies” and claim that the U.S. itself is manufacturing the bills as a pretext for war. A crackdown has been underway since 2004, so this may come to a head soon.