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

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 ...

Mike Waltz was fired as national security advisor after being caught using the encrypted messaging app Signal during a ...

The Democratic senator will not vote to confirm the ex-national security adviser, who she says is "failing up" after putting the U.S. at risk with the Signalgate scandal.

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

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

Sen. Tammy Duckworth (D-IL) confirmed Sunday she would not support Mike Waltz in a Senate vote determining whether he will be ...

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

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

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