There is a legend that when Christian missionaries arrived in Russia in the 10th or 9th century AD, the King of Russia had to choose which faith his people would be baptized into. He carefully studied all the aspects of each branch of Christianity (and also some other religions) and then, it is said, he said
something like "The joy of living in Russia is in drinking (alcohol)." and then he chose Orthodox Christianity as they drink in their rituals. I am not sure if this a true story or a legend, but it's a pretty well known story. So here is a set of photos of Russian people and vodka.