Really.. so give us a history lesson about Ukraine and Crimea... as it has no history other then the USSR took Crimea from Russia and gave it to Ukraine back in the 50’s when they we both part of the Soviet Union
The relationship between the Ukraine and Russia goes way back to the beginning of the Kievan Rus in the 800s AD.
What was doesn’t really matter.
What is, is that Russia criminally invaded and occupied Crimea and is now losing the war of occupation.
In 1991, the Russian Federation recognized Ukraine's borders - including the Crimea belonging to Ukraine.
This was agreed upon in several international treaties to which Ukraine and Russia were signatories.
Then, in a Nacht-und-Nebel-Aktion, Russia seized the Crimea in 2014.
That's all anyone needs to know.
Regards,