It has become less cumbersome to explain to people about my origin. When we lived in California nobody cared about my name, because everybody had strange names and came from somewhere else. It was liberating. Sweden isn't that generous. Now I say, when asked: "I was born in Russia, lived thirty years in Sweden, two years in the US, one year in Finland, and now I live in the UK".
I have finally arrived at a satisfactory self-definition. I am a Nomadic Subject.