Mike Waltz's exit from the Trump administration comes on the heels of the Signal chat scandal. Here's what happened.

Mike Waltz, the national security adviser for President Donald Trump, is seen in photos using Signal during a Cabinet meeting ...

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

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

The communications app TeleMessage, which was spotted on former US national security adviser Mike Waltz's phone, has ...

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

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

A phone app that Mike Waltz, President Donald Trump’s former national security adviser, apparently used to save his text ...

President Trump recently discouraged the use of the Signal app after controversy over a group chat of administration ...

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

Waltz’s problem was that in an administration of know-nothing America firsters, solicitous Trump sycophants, and national ...

An Israeli app used by then-U.S. National Security Adviser Mike Waltz to archive chats on Signal was easily hacked and his ...