"I think it will be a brutal confirmation hearing," Senate Intelligence ranking member Mark Warner, D-Virginia, said on CNN. ...

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

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

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

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

World: The photo revealed that Waltz had been texting several high-profile figures, including Vice President JD Vance, Marco ...

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

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

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

Donald Trump removed Mike Waltz from his post as national security adviser — marking the first significant personnel overhaul ...