"Right now, I think there is a lot of reasons for optimism that the negotiations will be fruitful," Mattis told reporters.
Prosecutors say Deon Monroe Jones shot Capt. Scott Corwin in Savannah after Corwin fought back during an attempted robbery.
The Huawei phones could be used to gather sensitive information, according to U.S. intelligence agencies.
A Baltimore hospital says a wounded U.S. veteran has received the world's most extensive penis transplant.
The first of Monday's near-simultaneous attacks in western Badghis province hit army units in the district of Ab Kamari.
Veteran Lance Cpl. Enrique Salas' flag-draped casket was loaded into a hearse with a Marine Corps seal.
The Air Force is building a base for armed drones, a new front in America's battle against the extremist threat in Africa.
Although the Army will fall short of its recruitment goal, retention rates have increased from 81 to 86 percent.
President Trump claimed North Korea has agreed to "denuclearization." But that's not the case.
Rear Adm. Ronny Jackson was tending to injured military personnel in Iraq when he was summoned to Washington.
The Air Force would not comment on the report, and referred all questions to the White House.
Top military leaders dispute Defense Secretary Jim Mattis on transgender troops serving openly.
Since 2005, U.S. special operations forces have been conducting Flintlock joint military exercises in western Africa.
Facing increased competition from Russia and China, the Air Force is pushing to develop experimental technologies for combat.
Syria has accelerated its military campaign to retake all remaining enclaves in the capital and surrounding areas.
"Today marks the 10th anniversary since the Marines came and told me my son, Jordan Haerter, was killed in action."
ABC gave us a chance to speak with Jurnee, the 18-year-old military spouse who's making a name for herself on the latest seas...
T-Mobile is launching a new discount plan just for the military and their families on April 22.
Be armed with these tips before you sign that lease.