My idea is for military service to be required for all citizens of every country. By having such required military service, citizens of every nation would have more of a stake in the decisions of their sovereignty. Moreover, if everyone was required to serve in the military for their country, I think it would promote world peace as most people do not want to go to war. It would provide a greater threshold for nations to go to war, as the people in power may have a different stance on initiating a conflict if their children may potentially be putting their lives at risk.
Israel has such required military service and their citizens have seen the benefits of the policy. Not only does it help prevent unnecessary conflicts, it also empowers the youth to take on responsibilities they would not normally assume until they are older. People in their mid twenties have the potential to be officers or commanders, making crucial decisions. This responsibility helps mold more responsible citizens their nation, and thus by requiring service for all nations, it would make everyone a better citizen of our global community. Required military service would make the world a better place.
An Example of Required Service: