Yeah, its Ukraine invaded Ukraine, captured Crimea and killed over 10 thousand Ukrainians. Who else it can be?
In 90s and yearly 2000s Russia was invading Russia and tens of thousands of military and civilians died.
Do you have a source for this?.
I was wrong a bit, the number includes Russian volunteer fighters and with covert Russian military is estimated to be about 14400.
https://en.wikipedia.org/wiki/War_in_Donbas_(2014%E2%80%9320...