The world's only triple enclave expired last week.
There are apparently many more enclaves in the world than one would think. Life in them turns out to be fairly difficult. Which is why every government on earth could grant a right of secession down to the individual level tomorrow, and we would find that only very eccentric people would take advantage of this possibility, and only very, very wealthy ones could make it work. You see, it turns out that the latest findings of social science have discovered that man is a political animal.