If you want to know the one thing that prevents World Peace is selfishness. You are selfish and prevent world peace. You do not do anything unless you are rewarded. That is selfish. And because you are selfish you have become an island unto yourself. Instead of becoming a member of the species you are part of those whom have fractured and conquered our peoples. The flag you love is a symbol of hate. You have made the natural-born citizens of Earth illegal aliens. This genocide you perpetrate is all because you refused to help.