The Pentagon's intelligence and law enforcement arms are investigating what it says are leaks of national security ...

The Department of Defense plans to use polygraph tests to aid in investigating “recent unauthorized disclosures of national ...

The Pentagon said it would investigate purported leaks of national security information, saying that the probes could include polygraph tests.

Pentagon officials also resoundingly dismissed ... The Department of Justice on Friday announced its own probe into “the selective leak of inaccurate, but nevertheless classified” information ...

The Pentagon is seen from above. The Pentagon in Arlington, Virginia, is the U.S. Department of Defense headquarters and one of the world's largest office buildings. - Jen Golbeck/SOPA Images ...

President Trump said his national security adviser, Mike Waltz, "learned a lesson" after he opened up a secret chat of Trump ...

WASHINGTON — The Pentagon’s intelligence and law enforcement ... on Friday announced an investigation into “the selective leak of inaccurate, but nevertheless classified, information ...

Billionaire Elon Musk took his campaign to cut the U.S. federal government into uncharted waters on Friday, holding an ...

Speaking to reporters from the Oval Office, the president focused on the successful U.S. airstrikes in Yemen more than the ...