I thought about it too. )) But is it the one? I remember feeling very peaceful when reading it, I would not call it creepy, unlike another book Hanna mentioned - about children dying of cancer in a post-Apocalyptic world. o_O
I don't remember any Soviet book for children with such a brutal message about nuclear threat. Soviet propagandistic literature was often steeped in the past - most of it was about fighting Nazis or Civil War heroes.