U.S. Secretary of Defense Jim Mattis speaks during a media conference at NATO headquarters in Brussels on Thursday, Feb. 16, 2017.
U.S. Secretary of Defense Jim Mattis speaks during a media conference at NATO headquarters in Brussels on Thursday, Feb. 16, 2017. Virginia Mayo AP
U.S. Secretary of Defense Jim Mattis speaks during a media conference at NATO headquarters in Brussels on Thursday, Feb. 16, 2017. Virginia Mayo AP