Secretary of Defense Pete Hegseth has ordered U.S. Cyber Command to halt offensive cyber operations and information ...

The Defense Department initially told employees to "pause any response" to OPM's request for a list of their work ...

Multiple U.S. officials tell CBS News that Defense Secretary Pete Hegseth has issued a directive to U.S. Cyber Command to ...

Jim Mattis and four other former defense secretaries called President Donald Trump’s ouster of Gen. CQ Brown and other top ...

The five men asked the House and the Senate to hold hearings “to assess the national security implications of Mr. Trump’s ...

Five former secretaries of defense are calling on Congress to hold immediate hearings on President Donald Trump’s recent ...

Five former U.S. defense secretaries on Thursday condemned President Donald Trump's "reckless" firing of the chairman of the ...

The defense secretary threatened Mexico with unspecified "unilateral action" in a call with the country's leaders, according ...

Mr. Hegseth served at the U.S. Navy base as a National Guard lieutenant. The base is now being used to hold some migrants who ...

The new Pentagon chief got a look at Guantánamo Bay’s most infamous inmate in his recent visit to the wartime prison.

It appears that the U.S. no longer considers Russia a significant cyber threat, according to multiple new reports on a ...

President Donald Trump's Tuesday address to a joint session of Congress headlines another busy week at the Capitol.