VIDEO: SEN. Dianne Feinstein Talks Petraeus Affair on ANDREA MITCHELL

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Sen. Dianne Feinstein, Senate Intelligence Committee Chair, told Andrea Mitchell today that "this is certainly an operationally sensitive matter. But we weren't briefed. I don't know who made that decision," when asked about the committees lack of knowledge of General Petraeus' affair. Below, check out the interview in full on ANDREA MITCHELL REPORTS.