Defense Secretary Jim Mattis listens as President Donald Trump answers questions during a meeting with military leaders in the Cabinet Room on October 23, 2018. (Photo by Win McNamee/Getty Images) ...

Defense Secretary Jim Mattis met with Tunisian Prime Minster Youssef Chahed at the Pentagon, July 10, 2017, to discuss Tunisia™s resilience and the fight against terrorism. Join thousands of ...

Defense Secretary Jim Mattis welcomed Polish Defense Minister Antoni Macierewicz with a full honor cordon at the Pentagon before the two leaders held discussions on regional security, Sept. 21, 2017.

Defense Secretary Jim Mattis admitted to Congress Tuesday that the U.S. is losing in Afghanistan, and promised to deliver a new strategy in a matter of weeks. “We are not winning in Afghanistan right ...

WASHINGTON • Defense Secretary Jim Mattis is stepping down from his post, President Donald Trump announced Thursday, after the retired Marine general clashed with the president over a troop drawdown ...