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.

National security adviser Mike Waltz is leaving his White House post, although soon after reports about his departure were published, President Trump announced he plans to nominate him to be ambassador to the United Nations.

Losing Mike Waltz as national security adviser isn’t that big of a change. The guy never had much power. One intriguing aspect of President Donald Trump’s second administratio