ELI5: Explain Like I'm 5

International security

International security is when countries all over the world work together to keep each other safe. It means that countries come together and cooperate to reduce the chances that someone will try to hurt any of them. This includes preventing wars, protecting important buildings like embassies, and stopping criminals from doing harm around the world. It also means helping to stop people from getting sick or struggling with poverty. Countries help each other with resources, knowledge, and financial aid to make sure everyone is safe and able to live a good life.