At his sentencing hearing Tuesday, Staff Sgt. Frank Wuterich, the remaining Marine charged in the 2005 Haditha killings, expressed sorrow for the victims, and said he hadn't meant for his men to kill innocent Iraqis. Margaret Warner discusses his plea…

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…

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