“The well-being of mankind,” Bahá’u’lláh wrote more than a century ago, “its peace and security, are unattainable unless and until its unity is firmly established.”
The Great Peace towards which people of goodwill throughout the centuries have inclined their hearts, of which seers and poets for countless generations have expressed their vision, and for which from age to age the sacred scriptures of mankind have constantly held the promise, is now at long last within the reach of the nations. For the first time in history it is possible for everyone to view the entire planet, with all its myriad diversified peoples, in one perspective. World peace is not only possible but inevitable. It is the next stage in the evolution of this planet— in the words of one great thinker, “the planetization of mankind.”
The primary question to be resolved is how the present world, with its entrenched pattern of conflict can change to a world in which harmony and cooperation will prevail. Despite the obvious shortcomings of the United Nations, the more than two score declarations and conventions adopted by that organization, even where governments have not been enthusiastic in their commitment, have given ordinary people a sense of a new lease on life. The Universal Declaration of Human Rights, the Convention on the Prevention and Punishment of the Crime of Genocide, and the similar measures concerned with eliminating all forms of discrimination based on race, sex or religious belief; upholding the rights of the child; protecting all persons against being subjected to torture; eradicating hunger and malnutrition; using scientific and technological progress in the interest of peace and the benefit of mankind—all such measures, if courageously enforced and expanded, will advance the day when the specter of war will have lost its power to dominate international relations. A few issues, because of their immediate relevance to establishing world peace, deserve additional comment.
Racism, one of the most baneful and persistent evils, is a major barrier to peace. Its practice perpetrates too outrageous a violation of the dignity of human beings to be countenanced under any pretext. Racism retards the unfoldment of the boundless potentialities of its victims, corrupts its perpetrators, and blights human progress. Recognition of the oneness of mankind, implemented by appropriate legal measures, must be universally upheld if this problem is to be overcome.
The inordinate disparity between rich and poor, a source of acute suffering, keeps the world in a state of instability, virtually on the brink of war. The solution calls for the combined application of spiritual, moral and practical approaches. A fresh look at the problem is required, entailing consultation with experts from a wide spectrum of disciplines, devoid of economic and ideological polemics, and involving the people directly affected in the decisions that must urgently be made. It is an issue that is bound up not only with the necessity for eliminating extremes of wealth and poverty; but that must include full equality between the sexes.
World order can be founded only on an unshakable consciousness of the oneness of mankind, a spiritual truth which all the human sciences confirm. Anthropology, physiology, psychology, recognize only one human species, albeit infinitely varied in the secondary aspects of life. Recognition of this truth requires abandonment of prejudice—prejudice of every kind—race, class, color, creed, nation, sex, degree of material civilization, everything which enables people to consider themselves superior to others.
Acceptance of the oneness of mankind is the first fundamental prerequisite for reorganization and administration of the world as one country, the home of humankind. Universal acceptance of this spiritual principle is essential to any successful attempt to establish world peace. It should therefore be universally proclaimed, taught in schools, and constantly asserted in every nation as preparation for the organic change in the structure of society which it implies.
In the Bahá’í view, recognition of the oneness of mankind “calls for no less than the reconstruction and the demilitarization of the whole civilized world—a world organically unified in all the essential aspects of its life, its political machinery, its spiritual aspiration, its trade and finance, its script and language, and yet infinite in the diversity of the national characteristics of its federated units.”
Permanent peace among nations is an essential stage, but not, Bahá’u’lláh asserts, the ultimate goal of the social development of humanity.. The crowning goal is the unification of all the peoples of the world in one universal family.
To the Peoples of the World (The Universal House of Justice October 1985 )
https://www.bahai.org/beliefs/universal-peace/promise-world-peace/