A Trump administration move to halt a refugee program spilled over into efforts to bring people from Afghanistan to the U.S., ...

Army units training in Europe try out systems for future use, including new drones and GM Defense’s offering for a Humvee replacement.

The fentanyl crisis represents a clear and present danger to US national security, requiring a coordinated, sustained, and ...

Here's what is known about the Black Hawk and its crew that crashed into the American Airlines passenger jet over the Potomac ...