A mouse and a frog are arguing over a specific flower in a beautiful flower meadow. The dispute escalates into a violent confrontation between mice and frogs. War begins on a small scale, starting from disagreements over possessions, fueled by anger or fear. This is something even small children experience and understand. "Why" by Nikolai Popov is an important book, as it illustrates the development of a conflict from the very beginning. It provides children with the opportunity to develop ideas on how and when to prevent violence and escalation.