5 things to know about the Signal chat leak controversy

2. Mike Waltz takes 'full responsibility'
National security advisor Michael Waltz said on the Fox News program "The Ingraham Angle" on Tuesday that he accepted "full responsibility" for a leaked chat about the Yemen attack.
"I take full responsibility. I built the [Signal] group," Waltz stated. "It's embarrassing. We're going to get to the bottom of it."
Waltz stated that he spoke with Elon Musk, who heads the Department of Government Efficiency and said they have the "best technical minds looking at how this happened."
When asked how the number got on the chat, Waltz asked Ingraham if she had ever "had somebody's contact show their name, and then you have somebody else's number there."
"Of course, I didn't see this loser in the group; it looked like someone else," he said. "Whether he did it deliberately or it happened by some other technical mean is something we are trying to figure out."
Waltz also took aim at Goldberg, claiming that the Atlantic editor had a "horrible reputation" and that "he really is the bottom scum of journalists."
"I know him in the sense that he hates the president, but I don't text him. He wasn't on my phone. And we're going to figure out how this happened," Waltz continued.
For their part, reported Fox News, The Atlantic responded by stating that "attempts to disparage and discredit The Atlantic, our editor, and our reporting follow an obvious playbook by elected officials and others in power who are hostile to journalists and the First Amendment rights of all Americans."