We are covering what is the first major ousting of a Trump White House official in the young second term that we're here living through.

It's the security official who uncorked a breach by adding outsiders to a government group message discussion on the app signal.

It's a big deal. You probably remember hearing about it.

Well, he's been relieved of that security post.

Michael Waltz out as national security advisor.

That is, of course, a key role typically held for, well, longer than 100 days,

typically for years, by seasoned national security vets.

This move is Trump's first major senior staffer change of the second term coming just 48 days

after Walt's first released discussion, internal discussion of war plans through that app.

Many experts said it was a fireball offense at the time and drew magazine covers, kind of reflecting

and really mocking what was seen as an amateurish mistake

playing with larger risk. National security experts said that mistake, literally made the United

States more vulnerable to massive foreign cyber attacks. Today's move shows how the lingering

scandal and the heat ultimately proved too much, at least for the

official to be in this post in the Trump administration.

In editor-in-chief of the Atlantic, Jeffrey Goldberg says he was accidentally texted war

plans. I don't know anything about it. I'm not a big fan of the Atlantic. So the person that

I thought was on there was never on there. It was. Who was that person? Well, I'm not. Look, Laura, I take,

I take responsibility. Trump said it'll never happen again. And from now on, they'll only talk about

war plans over Snapchat. The White House and the president's national security team doubling down

on efforts to shift blame surrounding that signal chat debacle.

Mike Walsh, I guess he said he claimed responsibility.

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