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 ...

A Pentagon watchdog report has found that Defense Secretary Pete Hegseth put U.S. service members at risk when he used the Signal messaging app to discuss a military strike in Yemen earlier this year.

WASHINGTON (AP) — The Pentagon’s watchdog found that Defense Secretary Pete Hegseth put U.S. personnel and their mission at risk when he used the Signal messaging app to convey sensitive information ...

WASHINGTON — The Pentagon’s watchdog revealed Thursday that Defense Secretary Pete Hegseth put U.S. personnel and their mission at risk when he used the Signal messaging app to convey sensitive ...