Polygon or Firing Range Russian is a 1977 Soviet animation science fiction short film.
In the nottoodistant future a scientist from a military great power wants revenge for his son who was a soldier KIA during war and thus invents a weapon capable of ending the conflict an automated mindreading tank that detects and reacts to human feelings of hostility and fear. After his revenge successfully takes place as the tank destroys a number of generals responsible for the loss of his son he himself falls victim to his own creation.Polygon was directed by Anatoly Petrov born 1937 and it was based on a screenplay by Sever Gansovsky edited by Arcady Snessarev. The short film was produced by Lubov Butyrina and released by Soyuzmultfilm studio. It featured the artwork of artists Elena Karavaeva, Olga Bogolubova, I. Kulakova, Elena Bogolubova and N. Ivancheva. The art director was Galina Barinova. ........
Source: Wikipedia