The Butter Battle Book: Which Side Do You Butter Your Toast?

Published in 1984, Dr. Seuss’s The Butter Battle Book is about two societies, the Yooks and the Zooks, who disagree on which side their toast should be buttered. An arms race ensues.

This is a classic cold war analogy that was turned into a cartoon in 1989. It’s available to watch on Youtube, and here’s the IMDB entry.