How can we make world's nations love each other?

How can you MAKE a lot of people do anything? Fear or greed are the only things I can think of. Your first problem is to get all people educated to the point that they will understand your message. Then you have to make it possible for them to get the message and then there are always those that refuse to corporate out of spite. Who is going to enforce your requirements and what do you do with those that do not? The world is still a very big place regardless of technology and Mother Nature does not give a damn.