With the material problems solved, and everyone receiving education and being provided the appropriate circumstances for their intellectual development, there will not any problem, and society will work getting from each one what one has the capacity to give, and providing to each one what one need.
There are, however, several wars between democracies that have taken place, historically.
World peace, or peace on Earth, is the concept of an ideal state of happiness, freedom and peace within and among all people and nations on Planet Earth.
This idea of world nonviolence is one motivation for people and nations to willingly cooperate, either voluntarily or by virtue of a system of governance that objects it will be solved by love and peace.
Proponents of the policy of mutual assured destruction during the Cold War attributed this to the increase in the lethality of war to the point where it no longer offers the possibility of a net gain for either side, thereby making wars pointless.
After World War II, the United Nations was established by the United Nations Charter to "save successive generations from the scourge of war which twice in our lifetime has brought untold sorrow to mankind" (Preamble).realize a principled and peaceful and prosperous future. The document proceeds to detail what "achieving peace through strength requires".Associated with peace through strength are concepts of preponderance of power (as opposed to balance of power), hegemonic stability theory, unipolar stability, and imperial peace (such as Pax Romana, Pax Britannica, or Pax Americana).The solution is not so much based on an agreed agenda, or an investment in higher authority whether divine or political, but rather a self-organized network of mutually supportive mechanisms, resulting in a viable politico-economic social fabric.The principal technique for inducing convergence is thought experiment, namely backcasting, enabling anyone to participate no matter what cultural background, religious doctrine, political affiliation or age demographic.People will not be violent but respecting, peaceful and altruistic, because the material conditions will finally allow them to be so.They do not longer need to live just aiming to earn money, but they live to develop themselves spiritually.The Preamble to the United Nations Charter also aims to further the adoption of fundamental human rights, to respect obligations to sources of international law as well as to unite the strength of independent countries in order to maintain international peace and security.All treaties on international human rights law make reference to or consider "the principles proclaimed in the Charter of the United Nations, recognition of the inherent dignity and of the equal and inalienable rights of all members of the human family is the foundation of freedom, justice and "peace in the world". Hinckley saw a trend in national politics by which city-states and nation-states have unified and suggests that the international arena will eventually follow suit.The term is traced back to the Roman Emperor Hadrian (reigned AD 117 – 138) but the concept is as old as the recorded history.In 1943, at the peak of World War II, the founder of the Paneuropean Union, Richard von Coudenhove-Kalergi, argued that after the War the United States is bound to take "command of the skies" to ensure the lasting world peace: But the inauguration of such a glorious century of peace demands from us abandonment of old conceptions of peace.