In my opinion this film throws light on the behaviour of people who have an authority over others or is someone's superior. How such a person can hurt others by using their authority to further their own agenda, satisfy their ego. And it also tells us the somewhat cruel story of how small the world is, where a father has sexual relations with his own daughter without him knowing until it's too late, it only leaves us thinking what he must be thinking how that must have affected him knowing such harsh truth, people can't even understand an iota of what its like.
Also, war....I would like to say, in a battle for territory, for power between two countries/ two generals innocent people, children, women, men all are affected alike it's them who loose everything doesn't matter which side wins, the damage is on both sides. And it will always be if people who have power start exploiting it, 'cuz humankind is terribly greedy and as the greed prevails so does destruction of life.