Former Secretary of Defense Mark Esper said former President Donald Trump should be taken seriously when he suggests using the U.S. military against his political opponents. In recent days, Trump ...

Former Secretary of Defense Mark Esper has become the latest ex-official from President Trump’s first term to lose their security detail, according to a report. The Pentagon revoked Esper’s ...

Former Defense Secretary Ashton Carter has died unexpectedly at the age of 68, according to family. Carter died of a "sudden cardiac event" on Monday night in Boston. He served as secretary of ...

A conservative watchdog group has compiled a list of “woke ideologues” for Department of Defense secretary designee Pete Hegseth to purge should he overcome multiple scandals and become… ...

He served as secretary of defense from 2013 to 2015. Before that, he served a dozen years in the U.S. Senate as a Republican senator from Nebraska. Secretary Hagel, great to speak with you again.

Former Defense Secretary Mark Esper's security detail, which was provided by the Defense Department, was pulled Tuesday night, a U.S. official told CBS News.

Learn the two watershed moments for IT in the military over the past 50 years and the four most important domains of cybersecurity, according to former DoD chief Robert Gates at Gartner Symposium.

Former Secretary of Defense Ashton Carter, 68, died on Monday in Boston following “a sudden cardiac event,” his family said in a statement. He served as President Barack Obama’s final ...