Ah, I should have made it more clear. It's the decision date, note the application date. So probably those applicants applied when the USSR was still a thing.
Yeah, Czechoslovakia is also on the list, even though they split in 1993.
Might be interesting to somehow show the delta between application date and decision date, in particular by country.
So, in essence, the bureaucracy took so long that at some point during the process, their country ceased to exist. Kafka would be proud :)