Answer: You prevent them from eating caviar.
Based on reports brought back by a Japanese
man who served as Kim Jong Il’s personal sushi chef for 14 years, the Japanese government figured out what KJI and his cohorts loved to indulge in and proceeded to ban export of these products to North Korea per a new UN resolution. The list includes caviar, liquor, car and yachts, gadgets, jewelry, and carpets. Quantity-wise, the 24 items constituted 16% of all exports from Japan to the DPRK.
For more on KJI’s luxurious lifestyle, check out Dictator Style.