Say what you will about North Korea, its obscenely skewed priorities and its 20-something, chubby-kid-with-a-bad-haircut leader. The real key to reining in this outlier loose cannon is not the United Nations or the United States. It’s China. The China that wants to be the world’s dominant economic player. The China that needs customers and clients and raw materials. The China that doesn’t want its border overrun by frenzied, panicking North Koreans. The China that provides enough food and energy for North Korea to maintain its subsistence lifestyle.