U.N. ambassador nominee Mike Waltz denied sharing sensitive information during a mobile app chat in March during a Senate ...

Former national security adviser Mike Waltz defended his use of the messaging app Signal during a confirmation hearing Tuesday during which lawmakers largely avoided the topic.

The lawmakers used Waltz's nomination hearing for U.N. ambassador to resurrect criticisms of the handling of sensitive Signal chats.

Sen. Cory Booker, D-NJ, criticized Waltz’s inability to take accountability. Booker said Waltz “denied” and “deflected” ...

President Donald Trump's former national security advisor Mike Waltz on Tuesday defiantly defended his use of a group chat to discuss military plans as he faced accusations of lying during a hearing ...