The Latest Breaking News from Pentagon

The phrase "nuclear energy" conjures images of large steaming towers or Tony Stark's arc reactor from the iconic "Iron Man" movies. But two Seattle-based startups are designing nuclear technologies small enough to pick up and carry that, thanks in part to buy-in from the Defense Department, they hope will fuel…

WASHINGTON — Suspects did not want to be caught in the crosshairs of William J. Walker.

The Pentagon on Friday said it had transferred an Afghan detainee who was held at Guantanamo Bay for 15 years, a move that comes after a court ruled the United States had no legal justification to hold him.

The Senate's companion bill and related measures would support $857.6 billion for national defense, some $44.2 billion more than the House.

Israel’s defense minister on Monday said that Israel is helping build a US-led regional air-defense alliance against Iran, and that the partnership has already thwarted attempted Iranian attacks. Defense Minister Benny Gantz said he expected the upcoming visit by President Joe Biden to the region to further strengthen this fledgling…

US military officials have expressed concern about the increased risk of confrontation between US and Russian forces in Syria. The commander of US Central Command (Centcom), General Erik Kurilla, said in a statement that his regional forces seek to avoid any miscalculated steps that would lead to unnecessary conflict. "We…

The Biden administration's plan to sell four large, armable drones to Ukraine has been paused on the fear its sophisticated surveillance equipment might fall into enemy hands, according to two people familiar with the matter.

Latest hearing in US lawmakers’ probe into Capitol riot focuses on Donald Trump pressure on Pence. Here’s what we know.

The Senate Armed Services Committee has proposed a roughly 10 percent increase in national security funding for fiscal 2023.