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 ...

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

The move is the latest effort to slim down a federal agency, and after Trump announced former National Security Advisor Mike ...

Days after former National Security Adviser Mike Waltz was caught using a knock-off Signal app, a hacker broke into the ...

Mike Waltz, President Trump's national security advisor, is leaving the White House weeks after he accidentally added a ...

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

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

The president says Waltz, who started the leaked Signal chat, will be nominated as US ambassador to the UN and be temporarily replaced by Secretary of State Marco Rubio.

Signalgate was the national security adviser’s most glaring mistake. But his problems ran deeper. After Michael Waltz, the ...

National security adviser Mike Waltz is leaving his White House post, although soon after reports about his departure were ...

Mike Waltz, the departing national security adviser ... involving him and other prominent government officials using Signal to converse about highly sensitive details regarding a planned U.S ...