Susan Rice: 'This is most irresponsible leadership during a transition' ever seen

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Former National Security Adviser Amb. Susan Rice joins Andrea Mitchell to discuss the stalled transition, and the national security risks that accompany. She slams the Trump administration's behavior during the delay, saying that "they are proceeding in a fashion that is reckless, dangerous, and irresponsible" and calling the president's actions the "most irresponsible leadership during a transition I think any of us have seen in our lifetimes if not in the history of the republic."