Signalgate was the national security adviser’s most glaring mistake. But his problems ran deeper. After Michael Waltz, the national security adviser, inadvertently included The Atlantic ’s editor in chief in a group chat about military attack plans on the Signal messaging app, he found himself on very thin ice with his boss.

Witkoff, who has been leading negotiations with Russia, Iran, and Hamas, is reportedly Trump’s leading pick for national security adviser. Other names being floated include top White House aide Stephen Miller, National Security Council senior director for counterterrorism Sebastian Gorka, and special envoy for special missions Richard Grenell.

When you buy through links on our articles, Future and its syndication partners may earn a commission.

Mike Waltz, the departing national security adviser ... The former Republican congressman from Florida is expected to leave his White House role, a source familiar with the situation confirmed ...

Waltz “wanted to take U.S. policy in a direction Trump wasn’t comfortable with because the U.S. hadn’t attempted a diplomatic solution,” an anonymous person told the Post. “It got back to Trump and the president wasn’t happy with it,

Fired National Security Adviser Mike Waltz can‘t help but leak his Signal chats. Waltz, whose downfall was precipitated by Signalgate in March, was photographed on the messaging application again on Wednesday during his final meeting as a member of President Donald Trump’s cabinet. Waltz, 51, did not bother to keep his screen hidden.