It was Russia that forced other countries to learn Russian, which they are now doing in Crimea, not the other way around.
Crimea has been predominately Russian since the 18th Century, since Catherine the Great. Everyone speaks Russian in Crimea --even moreso than in the Donbas. I was in Sevastopol in August, 2013, before the re-annexation. Russian flags flew everywhere. Russian was spoken everywhere. They loathed Americans. I was shunned and ignored until I attempted crappily to speak Russian. At that point, the locals became friendly, respectful of the fact that I at least made an effort to speak their language.