“It would be also nice for your further analysis if you would evaluate a fact that Crimea was part of Russia since 1783”
So what? Estonia was under russian rule even earlier(1721). Does that mean russia has the right to annex it now because it was once part of the russian empire? Maybe the Swedes should invade Estonia because it was once part of their empire? The only thing statements like that prove is that European borders were once constantly changing.
Who said about Sweden and Estonia? The topic is on Ukrainian Nazis.