Former national security adviser Michael Waltz in the Cabinet Room of the White House in March. Shawn Thew / EPA / Bloomberg ...

The national security advisor and his deputy are reportedly leaving their posts, after the former accidentally invited a ...

Trump said he's nominating Michael Waltz to be ambassador to the United Nations, while Secretary of State Marco Rubio will ...

Waltz was at the center of the Signal chat controversy, in which a journalist was accidentally included in a discussion of ...

Waltz did not require congressional approval to serve earlier as President Donald Trump’s national security adviser ...

Waltz inadvertently added The Atlantic's editor-in-chief to a group thread discussing sensitive national security matters.

President Donald Trump ousted his national security adviser, Michael Waltz. Trump’s use of an 18th century law for ...

Last week, however, Waltz’s phone made headlines again: on Thursday, the same day that Waltz would be ousted from his ...

Michael Waltz, who on Thursday was ousted as President Donald Trump’s national security adviser. (Brendan Smialowski/AFP/Getty Images) Michael Waltz had all the right credentials to be national ...

President Donald Trump’s decision to oust his national security adviser, Michael Waltz, was the product of a slow accumulation of frustration with a former Green Beret officer who was seen as ...

Marco Rubio will stay on as secretary of state as well, Trump announced. In the first Cabinet shuffle of his second term, President Donald Trump on Thursday announced he's nominating Michael Waltz ...

President Donald Trump ordered the biggest personnel shake-up of his new administration on Thursday, replacing his national security adviser, Michael Waltz, with Secretary of State Marco Rubio ...