Define Persona Non Grata

So if you were going to use an example to define the term persona non grata, would it be possible to find a better example than this.

I would have assumed that it would be a diplomatic faux pas for the ambassador - the person who is responsible for maintaining goodwill and open communications with the host country - to make comments like calling the national leader a "lout" or the referring to the country as "paranoid."

Israel is a country in which people tend to look over their shoulders a bit more or they look at people more suspiciously. This is absolutely true and was something that I noticed (and noticed myself doing) while I was there. But isn't it true that they have justification? If Parisian busses were being blown up on a regular basis the good ambassador would probably be a bit more understanding.

Whether the comments "were made in the course of a private party" or not is irrelevant. If they were made it signals a serious respect issue with the new ambassador. France shouldn't send him and Israel shouldn't allow him in.

But he would probably make a great French ambassador to the Palestinian Authority.