What techniques do modern-day dictators use to control protestors? Hari Sreenivasan and Slate editor William Dobson discuss Dobson's new book, "The Dictator's Learning Curve," a portrait of how today's dictators are confronting and controlling democracy activists.

The fact that U.S. intelligence apparently didn't notice the death of Kim Jong-il for 48 hours is a demonstration of how impenetrable North Korea continues to be. Margaret Warner discusses the mysterious nation with former senior CIA and State Department…