>Half of Ukraine — the one closer to Russia — does not speak Ukrainian, mostly Russian
This half?
"The name Novorossiya, which means "New Russia", entered official usage in 1764, after the Russian Empire conquered the Crimean Khanate, and annexed its territories, when Novorossiya Governorate (or Province) was founded. Official usage of the name ceased after 1917, when the entire area (minus Crimea) was annexed by the Ukrainian People's Republic, precursor of the Ukrainian SSR." [0]
Maybe because it used to be a part of Russia and was gifted to the Ukraine by Lenin, the evil bolshevik? Hmm...
>Latvia and Estonia have huge parts of their population who don’t speak local national languages, but speak only Russian.
Because they are children and grandchildren of Russians who migrated there after the WW2 and now are subjected to discrimination by local nationalistic government.
[0] https://en.wikipedia.org/wiki/Novorossiya