I suppose what is meant by 'nationality' is the 'sending country'? It seems, some would interpret 'nationality' as a diplomat's 'country of origin'? At least for continental European history (from the Middle Ages through to the 18th/19th century), these 'nationalities' were constantly ignored, when joining a country's (state's) foreign service. I put this here just to be aware: a Florentine diplomat of the 16th century may be perfectly categorized as an Italian diplomat, but when categorizing Baltic, Bohemian, etc. diplomats of the 17th or 18th century, this concept of 'country of origin' will become a mess. Better just stuck with 'sending country'? --109.45.3.175 (talk) 04:47, 21 March 2016 (UTC)Reply