World peace is an ideal state of non-violence between all nations where conflicts are resolved cooperatively without warfare. While theoretically possible, some believe human nature prevents world peace due to inherent violence, while others argue war is not innate and this view prevents progress. As long as war exists, world peace cannot, but war may be necessary to protect human rights or when there is no peaceful resolution. All wars have consequences like death, injuries, disease, destruction and refugees. Education is seen as key to developing a culture of peace, which governments, organizations and individuals should promote through revising education, economic development, human rights, tolerance, communication, and international cooperation.