A pity about the tiny islands with their own TLDs.
Am I mildly amused to know someone somewhere had to manually remove Soviet Union (.su) from a list of countries to put a tarrif on? Absolutely.
For example, according to ISO 3166, Kosovo is not a country, but Antarctica is, which isn't particularly useful in real-world scenarios. Kosovo does have its own ccTLD (.xk, although it's supposed to be a temporary one) and were tariffed.
The reason I've mentioned Soviet Union in particular is that its domain is still active. You can go and buy .su right now, unlike say .yu (Yugoslavia), .dd (East Germany) or .cs (Czechoslovakia), which were deprecated.