Mattis resigned after Trump rebuffed his advice on Syria
Secretary Mattis and President Trump. Photo: Win McNamee/Getty Images
The big picture: The Times reports that when Mattis spoke with Trump about staying in Syria, he "was rebuffed, and told the president that he was resigning as a result." In his resignation letter, Mattis wrote that Trump has "the right to have a Secretary of Defense whose views are better aligned" with his, and stressed his belief in the importance of "showing respect" to American allies.