Peace enforcement is like being a referee in a soccer game. Just like a referee stops players from hurting each other, peace enforcement is when countries or groups of people work together to stop fighting and violence in a place where there is a conflict going on. This can be done through military force or by sending police officers to help keep the peace.
Imagine you and your friend are playing a game and you disagree on the rules. You both start getting upset and things start to get physical. Your parents would step in and make sure no one gets hurt and that the game is played fairly. That's kind of what peace enforcement is like, but on a much bigger scale. It's like making sure countries or groups of people play by the same rules and don't hurt each other.
It's important to have peace enforcement because without it, conflicts can become really dangerous and hurt a lot of people. By having peace enforcement, we can help make sure that everyone is safe and that people can live in peace without having to worry about violence.