I imagine they're officially sent in some "diplomatic" capacity.
Anne Sacoolas (the woman who mowed down a British teenager with her car, but escaped because she had diplomatic immunity) turned out to be a senior CIA spy.
Actually she probably did not have diplomatic immunity. That is why she was removed from the country in such a hurry.
https://en.wikipedia.org/wiki/Anne_Sacoolas#Diplomatic_issue...
Actually she probably did not have diplomatic immunity. That is why she was removed from the country in such a hurry.
https://en.wikipedia.org/wiki/Anne_Sacoolas#Diplomatic_issue...