About 80% of Ukraine's general population speaks Russia 11 5, 5:07am

@ArynChris The tense is correct. People in Ukrania know russian due to having been invaded in the past. The fact that there were further invasions does not affect a pre-existing knowledge.
Kinda like saying "I know I like apples because I tasted them"; it does not matter if while you are saying that you are munching on one.