Waltz was among high-ranking members of the administration who accidentally shared plans about a forthcoming U.S. military attack with the editor of the Atlantic magazine on the messaging app.

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

National security adviser Mike Waltz and his deputy, Alex Wong, will be leaving their posts in the Trump White House, according to multiple sources familiar with their departure.