Former national security adviser Mike Waltz defended his use of the messaging app Signal during a confirmation hearing ...

President Trump's former national security adviser was pressed on the inclusion of a journalist on a sensitive group chat ...

Waltz was removed from his job as national security adviser after he accidentally added a journalist to his Signal chat about an attack on Houthis.

As lawmakers consider the nomination of Mike Waltz to be the U.S. ambassador to the U.N., Waltz faced questions over his use ...

Mike Waltz, Trump's former national security adviser, faced questions from Democrats on the Signal chat controversy Tuesday ...

Mike Waltz, President Donald Trump's nominee for U.S. ambassador to the United Nations, appeared before the Senate Foreign ...

Mike Waltz will face questioning from lawmakers for the first time since he was ousted as national security adviser ...

Former national security adviser Mike Waltz, testified before the Senate Foreign Relations Committee in his bid to become U.N ...

Defense Department guidance specifically prohibited employees from using Signal to transmit non-public information ...

Mike Waltz defiantly defended his use of a group chat to discuss military plans during a hearing to be US ambassador to the ...

Senators questioned Mike Waltz about his inadvertent addition of a journalist to a Signal chat on military strikes in Yemen ...