Le Russe aime les bouleaux

Psychological drama about finding your life after everyone else have died. Best music score deserving Oscar nomination I've heard in months! Actors were picked up nevermind their nationalities. The most Russian here is the tree and may be couple of cats. I like the way that mix is shown by director though. A few clues might explain the role of UN but one has to be really vigilant here. Camera sees through people eyes and that creates vivid expression of presence at the scene. Script is quite well assembled around relationship between nations, sexes and ages. One mystery bother me still: which one is The Russian?