This week, Martha sits down with former Secretary of Defense under the Trump administration, Mark Esper, who explains why he believes President Vladimir Putin ultimately decided to invade Ukraine.

Then, Secretary Esper gives an inside look at the Trump presidency. He tells Martha where he believes Trump was successful, and where he went wrong.  Then he details why he and Chairman of the Joint Chiefs of Staff Gen. Mark Milley took steps in the final days of the Trump presidency to ensure the military wouldn't be used to overturn the election.

Follow Martha on Twitter: @MarthaMacCallum 

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