President Trump told NBC News’ Garrett Haake that he stands by National Security Adviser Mike Waltz after a military leak via ...

National security and intelligence experts say Russia, China and other adversaries will seek to take advantage of the ...

A Russian military intelligence agent embedded within Ukraine’s Armed Forces has been detained by Ukrainian ...

There’s little that American intelligence can do in the short term about Taiwan’s massive Chinese espionage problem.

Johnathan Buma, who worked in counterintelligence, was taken into custody Monday just as he was about to hop on an international flight — and slapped with charges the following day alleging he ...

An FBI agent who said that former New York City Mayor Rudy Giuliani “may have been compromised” by Russian agents and accused ...

Goldberg says he received an invitation to join the group from Waltz, the national security adviser, but no evidence suggests that Waltz did so purposefully. White House spokeswoman Karoline Leavitt ...

The Trump administration’s rapid slashing of the government workforce creates fertile ground for foreign adversaries to recruit disgruntled staffers who know some of the nation’s most closely guarded ...

The Pentagon will subject staffers to lie detector tests to weed out anyone leaking to the media. The Department of Defense said it plans to use polygraph tests in a memo published on Friday.

Gachgoach was crucial to catching Palestinians cooperating with Israel, a key arena both for strategic and tactical conflicts ...

Learn more about the Defense Counterintelligence and Security Agency's three strategic priorities outlined in its 2025–2030 ...