"I am pleased to announce the nomination of General Mark Milli, Chief of Staff of the United States Army, to the post of Chairman of the Joint Chiefs of Staff, where he will replace General Joe Dunford, who will resign," Trump wrote on Twitter.

It was a great deal of interest to make a statement.

- Donald J. Trump (@realDonaldTrump) December 8, 2018

He added that the appointment date is specified.

On December 7, Trump confirmed that he was nominating State Department spokesman Heather Nauert for the position of US Permanent Representative to the UN.