Democratic leaders of key House committees are reigniting calling for National Security Advisor Mike Waltz to step down.

U.S. officials seek to curb the militants’ attacks on ships in the Red Sea, but the group was not deterred by strikes in the ...

Last week, the White House said the National Security Council, the White House counsel office and President Trump adviser ...

In the US, daily downloads tripled to more than 60,000. In Yemen, where the app is less popular, downloads increased by five ...

The encrypted messaging app Signal is getting some unexpected attention this week. High-ranking officials in the Trump ...

A century-old law aimed at cracking down on disloyal wartime activities is in the spotlight after Trump admin's use of Signal ...

The group discussed potential U.S. military strikes on Iran-backed Houthi targets in Yemen. Two hours before ... Whether the Signal chat conduct constituted "gross negligence" under the Espionage ...

It’s a more extensive use of the app than previously reported and sheds new light on how commonly the Trump administration’s national security team relies on Signal.

The Pentagon warned against using Signal in a memo just last week, according to NPR. It cited threats from Russian hackers.

The nonprofit American Oversight sued Trump Cabinet members to force them to preserve Signal messages that could otherwise be ...

National Security Advisor Michael Waltz and a senior aide used personal Gmail accounts for government communications, ...

The Atlantic magazine has published even more “war plan” texts laying out minute-by-minute operational details — after the ...