How easily some of you are fooled by the MSM media. Judging by your tone I don't think you're really interesting in looking into what really happened there, but I will give you a quick summary to hopefully spark your interest on looking into it further. Crimea belonged to Russia, not Ukraine, before the soviet union came together. As such, the majority of residents are Russian citizens. Ukraine was committing horrible acts of genocide against Russian citizens (hosting "kill russian babies" parties, burning down a theater after trapping russians inside, etc. The residents of Crimea, who in the majority are Russian, became concerned and asked Putin for help. He said he will not get involved. They kept asking and he offered to provide a safe election where citizens could vote to succeed. They voted to succeed and then immediately took a vote to rejoin with Russia. There is noevidence of an invasion of any sort. Ukraine is fascist and extremely fucked up.