Some have been and others have simply retired and kept out of the limelight.
He was the president and not a diplomat .
What does Chief of Diplomat mean?
When a diplomat is expelled from the country that he/she is working in, the diplomat is declared persona non grata
The President
chief diplomat
The Chief Diplomat is the President of the United States, who at the moment is Donald Trump. Hillary Clinton is not, and has never been, Chief Diplomat.
carter
Barack Obama
An ex-president is a former president - a president who has left office.
Jimmy Carter has worked tirelessly as an international diplomat, for social causes such as Habitat for Humanity and as a novelist. Whether this makes him the most accomplished is hard to say but he is a role model.
Makes treaties
Makes treaties