James Mattis

BlDefense Secretary Jim Mattis has made relief to Puerto Rico relief a matter of national defense.

Retired Marine Gen. James Mattis made his first public comments as the nominee for secretary of defense.

Defense Secretary Jim Mattis said NATO was growing stronger against the Russian threat.

Here are five news stories and events to start your week from the editors at Military.com.

President Trump reportedly has clashed with SecDef Jim Mattis on whether to fire Gen. John Nicholson as commander in...

The commitment of U.S. troops to "combat duty" marks a shift from the Obama administration's strategy.

The military badly needs an infusion of $30 billion extra in defense spending, Defense Secretary Jim Mattis said Wednesday.

Defense Secretary Jim Mattis on Monday is beginning a marathon round of congressional testimony on defense spending.

Defense Secretary Jim Mattis warned Kim Jong-un that North Korea would be destroyed in conflict with the U.S.

The Pentagon needs to move faster to adapt new technologies for war, the secretary of defense said Monday.