Crimea was passed from the Soviet Union to Ukraine in 1994, not that long ago”
But in exactl what capacity? I don’t think it was subsumed into merely part of Ukraine. Perhaps more of an administrative arrangement, like other city-states that are “part of” a larger country.
It might be that Russia is re-asserting something that is a-historical, but, I don’t think it is as simple as saying “Russia took over part of Ukraine” in 2014 and therefore they must obviously give it back.....