An unofficial version of Signal, TeleMessage, used by Mike Waltz, Donald Trump's former National Security Adviser, has ...

For weeks, UN officials have been on tenterhooks waiting to see who US President Donald Trump would appoint as his ambassador ...

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

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 ...

White House national security adviser Mike Waltz is set to depart the administration just weeks after it was revealed he ...

"I think it will be a brutal confirmation hearing," Sen. Mark Warner said of Mike Waltz. "I think he's going to have tough ...

The unofficial Signal app used by ex-National Security Adviser Mike Waltz was reportedly hacked, exposing vulnerabilities in ...

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

US president Donald Trump said ­yesterday he is nominating his national security adviser Mike Waltz to serve as United ...

The Democratic senator will not vote to confirm the ex-national security adviser, who she says is "failing up" after putting ...

Waltz was among high-ranking members of the administration who accidentally shared plans about a forthcoming U.S. military ...