A third top Pentagon official was placed on administrative leave Wednesday in the fallout of a major leak of sensitive U.S.

President Donald Trump's second administration has not been lacking in scandal. One of the largest incidents recently ...

Make Iran dismantle its nuclear and missile programs. Then its top negotiator started softening his tone, and had to retreat.

Cultivating and rewarding expertise and integrity inside the White House are out, while passing loyalty tests and expending ...

At least six staffers at the National Security Council have been fired ... of his apparent inadvertent inclusion of Atlantic ...

President Donald Trump confirmed that multiple employees within the National Security Council were fired Thursday, adding to ...

Why was the national security adviser doing the tedious administrative work of setting up a chat group that should have been ...

U.S. security officials' private contact information and passwords have been found online within days of the Signal scandal.

Democrats on the Senate Homeland Security Committee say the reported use of Signal and Gmail by national security officials creates major cybersecurity risks.

National security advisor Michael Waltz commented on the Signal text chain leak during an appearance on "The Ingraham Angle." ...

The national security adviser's use of the messaging app is under scrutiny after he mistakenly added a journalist to a sensitive chat.

The Trump administration has fired Timothy Haugh, the head of the National Security Agency (NSA) and Cyber Command, several ...