You mean the Crimea "Peninsula"? Because your Geography looks like that of a certain guy from Murcia...
Neither Ukraine nor Russia, it belongs to the UK. The British Empire invaded Crimea (together with the French Empire, and Sardinia, they attacked the Russian Empire; did you noticed the word "Empire"?), do you have any other "injustice" (also known as History) to address? Maybe something about the Roman Empire?
Replacing population? Are you talking about Northern Ireland?
If you are perplexed by History, Perestroika, you should start by reading History, the different versions of History that you can read.
There is a piece of paper that says that Crimea belongs to Ukraine, as soon as you get another piece of paper (and there are a lot of pieces of paper, the Atlantic Charter, for example, saying a lot of things; toilet paper, may I say?), saying something different, that will be "legal" and everything against it will be "illegal". On the other hand, you should already know how irrelevant those terms have always been. Ultima ratio regum, that is your "argument".
Your question is in right the thread, but, to me, it looks like a pie in the sky more than anything else.
