"I think it will be a brutal confirmation hearing," Sen. Mark Warner said of Mike Waltz. "I think he's going to have tough ...

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

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

A phone app that Mike Waltz, President Donald Trump’s former national security adviser, apparently used to save his text ...

Mike Waltz, the national security adviser for President Donald Trump, is seen in photos using Signal during a Cabinet meeting ...

Mike Waltz was removed as Trump's national security adviser and faces Senate confirmation as the new nominee to be ambassador to the U.N.

President Donald Trump says he is nominating national security adviser Mike Waltz as United Nations ambassador while ...

President Donald Trump's outgoing national security adviser Mike Waltz was photographed using Signal on his phone during ...

President Trump reportedly wasn’t “happy” about his national security adviser’s hawkish stance on striking Iran nuclear sites ...

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

The knives were out for the national-security adviser from the start.

Waltz's deputy, Alex Wong, who was also ousted this week, reportedly remains at the National Security Council.