After messages from Mike Waltz's leaked chat on the Signal app went massively public months ago, he was ousted as President Donald Trump's top national security adviser. Now, he's up for a new ...

A magazine journalist's account of being added to a group chat of U.S. national security officials coordinating plans for airstrikes has raised questions about how highly sensitive information is ...

WASHINGTON – Defense Secretary Pete Hegseth divulged classified information in March from battlefield commanders about the U.S. attack on Houthi rebels in a chat on the commercial messaging app Signal ...

Rep. Seth Moulton, D-Mass., confronted Defense Secretary Pete Hegseth Thursday in a tense exchange over whether Hegseth improperly shared classified details about U.S. airstrikes against Houthi rebels ...

Mike Waltz, President Donald Trump's nominee for U.S. ambassador to the United Nations, will face questioning from lawmakers Tuesday for the first time since he was ousted as national security adviser ...

LAS VEGAS (FOX5) — The ACLU of Nevada is suing the state Department of Motor Vehicles, raising concerns over its alleged use of the encrypted messaging app Signal to communicate with U.S. Immigration ...