[ts4z]

IIRC Unicode doesn't define country codes. It was a workaround for a political issue of which countries recognize which other countries.

It would have been difficult to get the CN delegation to sign off on a list that contained TW, although there are probably others.

[andylynch]

There are many more than I realised - Wikipedia has a decent list https://en.m.wikipedia.org/wiki/List_of_states_with_limited_...