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Obama: 'Peace is hard, progress can be reversed'

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On Tuesday, President Barack Obama is set to address the UN in New York City. But sentiments have changed since one year ago; euphoria about the Arab Spring has changed to unrest in the Middle East and events such as the Benghazi embassy attacks in very recent memory. NOW w/ Alex Wagner looks at Libya and other concerns as the President prepares for tomorrow's address.Sep.24.2012

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