A photo taken this week showed Mike Waltz using an app that looks like—but is not—Signal to communicate with top officials.

More than a month after he drew criticism for using Signal to discuss an impending military attack, Waltz was seen using what ...

The Trump administration ousted national security advisor Mike Waltz and other staffers with the National Security Council, ...

There are some hurdles former National Security Advisor Mike Waltz must clear first before the United Nations ambassador job ...

Mike Waltz was photographed using Signal in a Cabinet meeting the day before Trump announced he was replacing him as national ...

The app Waltz was using appeared to be “TM SGNL,” a modified version of Signal that retains and archives messages to comply ...

Waltz was at the center of the Signal chat controversy, in which a journalist was accidentally included in a discussion of ...

National Security Advisor Mike Waltz is expected to leave his post in the Trump administration on the heels of controversy ...

President Donald Trump's outgoing national security adviser Mike Waltz was photographed using Signal on his phone during ...

President Donald Trump announced that Mike Waltz had been ousted as national security advisor. He was previously caught up in ...

A photo of Mike Waltz's phone appeared to show that he was using TeleMessage, an app that modifies Signal and other ...