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

The fired national security adviser engaged in intense coordination with Israeli Prime Minister Benjamin Netanyahu about ...

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

Waltz’s ouster on Thursday was cushioned by his appointment as President Donald Trump’s ambassador to the United Nations.

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

Mike Waltz, President Trump's national security advisor, is leaving the White House weeks after he accidentally added a ...

A Reuters photographer captured an image of Michael Waltz’s phone screen during a White House cabinet meeting, a day before ...

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.

The national security adviser infamously added The Atlantic's Jeffrey Goldberg to a Signal group chat discussing Yemen attack plans.

On Thursday, national security adviser Michael Waltz was ousted from his post in the most unceremonious way possible. Waltz had been long rumored to be on thin ice with President Donald Trump even ...