The Ukrainian constitution addresses these things: Any and all referenda for autonomy or independence must be put to a vote of all Ukrainians, and not just those in in the subject areas. Which makes sense, because separation would affect all Ukrainians.
From Putin's perspective, the Ukrainian Constitution doesn't apply to Crimea, which is currently part of Russia.
Too bad Putin did stop with Crimea in 2014.
“From Putin’s perspective, the Ukrainian Constitution doesn’t apply to Crimea, which is currently part of Russia.”
In my perspective, Putin is a pedophile.
“From Putin’s perspective, the Ukrainian Constitution doesn’t apply to Crimea, which is currently part of Russia.”
What Putin thinks about the Ukrainian constitution is irrelevant.