P resident Donald Trump is replacing his National Security Adviser, Mike Waltz, and nominating him to be Ambassador to the United Nations, he announced Thursday, marking the first major personnel shake-up of Trump’s second term.

President Donald Trump says he is nominating national security adviser Mike Waltz as United Nations ambassador while Secretary of State Marco Rubio would take over Waltz’s duties on an interim role.

Call it foreshadowing. President Donald Trump left Mike Waltz stranded on the tarmac after Air Force One headed for Michigan on Tuesday, just two days before he was fired as national security adviser.