Why it matters: Trump made clear he does not plan to fire his national security adviser, Mike Waltz, who established the Signal group and inadvertently added Atlantic magazine editor-in-chief Jeffrey Goldberg. What they are saying: "Michael Waltz has learned a lesson, and he's a good man," Trump told NBC's Garrett Haake.

President Donald Trump said he is confident in his national security adviser, Mike Waltz -- a day after a report detailed how he inadvertently added a journalist to a Signal group chat discussing Yemen war plans. Trump told NBC News on Tuesday that Waltz "has learned a lesson and is a good man."

President Donald Trump stood by his national security adviser, Michael Waltz, on Tuesday, calling him a “good man” a day after a report that he and other senior administration officials used a commercial messaging app to discuss secret military plans for Yemen and inadvertently included a journalist in the group chat.