The Trump administration cuts $1 billion in school mental health grants. Plus, the security issues stemming from the Signal ...

Trump’s now former national security adviser was using Signal in a room full of reporters. Here are the photos of his ...

A dozen current and former officials confirmed that the encrypted messaging app is used across various agencies — despite ...

P resident Donald Trump is replacing his National Security Adviser, Mike Waltz, and nominating him to be Ambassador to the ...

President Trump initially defended Mr. Waltz for mistakenly adding a journalist to a group chat about military strikes.

Democratic leaders of key House committees are reigniting calling for national security adviser Mike Waltz to step down.

Known as a "dirty" internet line by the IT industry, it connects directly to the public internet and can bypass the ...

President Donald Trump announced his choice to serve as ambassador to the U.N. after Rep. Elise Stefanik withdrew her ...

President Donald Trump has gone through his share of national security advisers. But he doesn't hold the record, yet.

People have legitimate concerns about whether his judgment is compromised,” Rep. Jimmy Gomez (D-Calif.) said of the defense ...

The defense secretary sent sensitive information about strikes in Yemen to an encrypted group chat that included his wife and ...

It is not clear whether everyone in the second Signal chat has a security clearance. A spokesperson for the ... The turmoil ...