"There are several recent examples where a succession of states, as described above, has not been entirely adhered to. This is mostly a list of the exceptions that have occurred since the creation of the United Nations in 1945. In previous historical periods, the exceptions would be too many to list."
Seems like there's going to be scope for endless debate here... at least the lawyers should do well.
https://en.wikipedia.org/wiki/Succession_of_states
Ah, but:
"There are several recent examples where a succession of states, as described above, has not been entirely adhered to. This is mostly a list of the exceptions that have occurred since the creation of the United Nations in 1945. In previous historical periods, the exceptions would be too many to list."
Seems like there's going to be scope for endless debate here... at least the lawyers should do well.