It’s just breaking that President Trump’s National Security Advisor Mike Waltz is resigning his post and taking his deputy, Alex Wong, with him.

Here’s the news via The Hill:

National security adviser Mike Waltz is leaving his post, marking the first major departure of President Trump’s administration in the wake of a controversy involving a text group chat, according to multiple news outlets.

Waltz had been at the center of a controversy involving a group chat over the Signal app where national security and defense officials were sharing key details of a military strike in Yemen. Waltz is said to be the individual who appeared to inadvertently invite Jeffrey Goldberg, the editor in chief of The Atlantic, to the chat.

CBS News, CNN and the Wall Street Journal, all citing multiple sources, reported that Waltz is expected to depart the administration in coming days. His deputy, Alex Wong, is also expected to leave his post.

White House press secretary Karoline Leavitt said she would not “respond to reporting from anonymous sources,” when asked about Waltz’s departure.

Wow. I did not see this coming, assuming it’s true. President Trump has always expressed his full confidence in Waltz and, aside from the Signal breach, he’s reportedly been doing a great job.

I wonder if this is really about Signal or about something else we haven’t learned about yet…