Do you think people will ever be able to live without wars? What should be done for it?

Of course, in the future people will live without wars. But they can come to this way of life differently. Vegetarians think that if we did not kill any animals people would live without wars. But I think It's not enough. We should develop our human nature and then we can live without wars. We should understand that we are not bodies and souls. We are only energy and light.