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

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 ...

In March, the editor of the Atlantic magazine revealed that national security adviser Michael Waltz had inadvertently ...

President Donald Trump's national security adviser Michael Waltz is expected to leave his post, sources familiar with the ...

National security adviser Michael Waltz is expected to depart his post, according to numerous media reports citing anonymous ...

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

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

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 ...