The amount of intergroup conflict in the world is costly and has huge and significant implications for national security and worldwide economic security,Read more at: <a href="http://phys.org/n...html#jCpIf">http://phys.org/n...html#jCpIf</a> only everyone was a socialist there would be no conflict, right?But ...NAZIs were socialists and the Soviets were socialists and they engaged in tremendous conflict.