New U.S. Defense Secretary Pete Hegseth, in one of his first acts in the job since being appointed by President Donald Trump, ...

Trump said earlier Wednesday that the U.S. has "30,000 beds in Guantánamo to detain the worst criminal illegal aliens ...

For more than 60 years, the military has launched reconnaissance, communications, and missile warning satellites into orbit.

An executive order said the United States faced a “catastrophic threat” from advanced aerial weapons. But a defense system ...

Defense Secretary Pete Hegseth began his first official day at the Pentagon Monday. A flurry of orders are expected that will ...

Defense Secretary Pete Hegseth said Monday the Pentagon will pursue an Iron Dome-style missile defense system for the United ...

Defense Secretary Pete Hegseth vowed to quickly comply with President Donald Trump's border executive orders upon arriving ...

The new cadre of national security officials is highly confident, highly online and scornful of Washington’s foreign policy ...

The Pentagon has asked its inspector general to review the record and behavior of Gen. Mark A. Milley, the retired chairman ...

Pete Hegseth told Milley, a critic of Trump, that he had ordered an investigation to determine whether his rank should be ...

The portraits of former Defense Secretary Mark Esper and retired Army Gen. Mark Milley, former chairman of the Joint Chiefs ...

President Trump on Monday night signed an executive order to create a next-generation missile defense shield, which the White ...