ARLUNX_171225_014
Existing comment: Secretary of Defense Jim Mattis visiting the honor guard on Christmas, 2017.
Within a year, the "last adult in the room" had resigned over Trump's sudden decision to pull out of Syria. Mattis had allowed for a two-month transition so whomever replaced him could have a smoother time. Trump couldn't handle the accolades being given to someone else so he forced Mattis out sooner.
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