President Donald Trump says he has fired Defense Secretary Mark Esper. It's a stunning move on the heels of Trump’s failed reelection bid. It could also unsettle U.S. allies and partners.

Opinion: Software-defined warfare provides a path to modernize and reimagine America’s defense capabilities for the 21st ...

Republican Secretary of Defense Mark Esper implemented DEI training programs and policies during the first Trump administration following the murder of George Floyd. The murder of Army Spec.

Citing a report that Defense Secretary Mark Esper commissioned during the first Trump term, Hegseth argued that these changes were a loosening of standards. "When I was in the Army, we kicked out ...

Learn about an Atlantic Council report's nine recommendations for DOD to advance its adoption of software-defined warfare.

White House says little-used provision allows the president to exempt most federal jobs from union protections.