It's a story or preferably a dialogue between a kid and an adult.
The kid would like to know why adults go to war, and the rather embarassed adult,
not willing to talk about subjects such as hatred between people, or thirst for power,
domination, prefers to explain things by minoring war to the fact that men have weapons and these
possessions make them to use them. The kid transcribe these words in his own way and answer to it with his own language.
He presents the world by a world map and make tanks and cannons out of paper which he lays down on the world.
He attaches them to helium balloons. The helium balloons which get rid the world off its weapons evoque the kid's pragmatism, his innocence,
his naivety.
Once the world is free of weapons he calls the adult to show the new landscape.
They both look at the world, clean, full of hope. The kid look up to the adult.
His look has more sense than his words, and seems to tell him :
"you see, it's simple." The child goes away leaving the admiring adult.
For a second, he believed the kid's story, but he knows that the balloons will eventually come down,
as to shunt them off on Earth again.