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…

Dec 30

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It's a year that will be remembered as one that ended authoritative regimes in Tunisia, Egypt, Libya and Yemen. In 2011, the most-wanted fugitive in the world was killed in Pakistan and severe weather battered the global population.