Forgot to write what languages I know.
Of course I know Russian, and ancient slavonic as that of church service. That helps in other Slavonic languages, many of them are variants with the same roots basically. Such as Ukrainian, Belarussian, Serbian, Bulgarian(it has cyrillic alphabet) etc.
Polish is my mother's language, but I must confess I'm not good at it.
When I lived in Turkey, I spoke Turkish as a native, but it's good 15 years since I'm back, and haven't spoke a word in Turkish in all this time, so I guess I must've forgot it completely.