James Mattis

Defense Secretary Jim Mattis will brief lawmakers Tuesday on the overhaul of U.S. strategies against major threats.

The Defense Department has under review a possible cellphone ban at the Pentagon and elsewhere.

A review will consider a ban on uniformed and civilian personnel bringing their cell phones into the Pentagon.

The "gunny" will receive the Medal of Honor for his actions at the Battle of Hue in 1968.

Defense Secretary Jim Mattis again pushed diplomacy as the solution to the North Korea crisis.

Defense Secretary Jim Mattis said the era of great power competition has returned.

Military pay, maintenance, intel ops and Reserve training would essentially stop in a government shutdown.

Defense Secretary Jim Mattis will unveil the National Defense Strategy on Friday.

President Donald Trump is meeting Defense Secretary Jim Mattis at the Pentagon on Thursday.

"What counts most in war is [the] most difficult to count." -- Defense Secretary Jim Mattis.