We all know where Kaliningrad is.
No it's not. Apparently - and this is news to me - it's an exclave not an enclave.
An exclave is a part of a country that is separated from the main part and surrounded by foreign territory. An enclave is a territory that is completely surrounded by another (single) territory. Example: Lesotho:
It's possible for a territory to be both an enclave and an exclave. Check this out:
Llivia is a Spanish town separated from Spain (and hence an exclave from Spain's point of view) and an enclave within - and surrounded by - French territory.
Who knew?
The Romans did; it's their fault. I think. Anyway, you'd think someone (Donald?) would sort it out.