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A major breakthrough in the showdown over Syria

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A deal was reached on how to eliminate Syria's stash of chemical weapons, calling for inspectors to be on the ground by November, and all of Syria's weapons to be destroyed or removed by mid-2014. NBC’s Ian Williams reports on the news from Geneva, Switzerland, and Raymond Tanter, who served on the senior staff of the National Security Council in the Reagan administration, joins Melissa Harris-Perry.