Okay, let's imagine you are playing a game with your friends where you have to pass messages around. Now imagine that you are playing this game with three different groups of friends.
Each group of friends has their own way of playing the game and their own special words that they like to use. So when you pass a message from one group to the next, you have to make sure you use the right words and do it in the right way so that the next group understands what you are saying.
These groups of friends are like different countries in the world. Sometimes, they need to talk to each other and share important information. But just like with the game, they have their own ways of communicating and their own special words and phrases that they use.
So the three communiqués are like three messages that these different countries send to each other to share important information. They need to make sure they use the right words and do it in the right way so that the other countries understand what they are saying.
Just like with the game, communication between countries can be tricky sometimes, but if they work together and try their best to understand each other, they can share information and make the world a better place.