The "United States of the World" organised and participated in various cities on five continents in the "57th World Day of Peace", bringing the experience of 35 years of the "Peace is Action" programme.
On this occasion, Secretary-General Prof. Michele Capasso recalled the words of Pope Francis in his message entitled: Artificial Intelligence and Peace.
"Artificial intelligence," writes Pope Francis, "must be understood as a galaxy of different realities and we cannot assume a priori that its development will make a beneficial contribution to the future of humanity and to peace among peoples. Such a positive outcome will only be possible if we show ourselves capable of acting responsibly and respecting fundamental human values such as 'inclusion, transparency, security, fairness, confidentiality and accountability'.
The themes of peace and artificial intelligence were the focus of Secretary-General Michele Capasso's start-of-year message and Father Ibrahim Faltas' appeal from the Holy Land.

The professor Michele Capasso - Secretary-General of the "United States of the World" and president of the "Fondazione Mediterraneo" - addressed, as usual, a message for the new year 2023.
The hope is that in this year we can reach a truce and then peace in Israel, Palestine, Ukraine and in other parts of the world through the enhancement of diversity.
“Only by tackling, solving and harmonizing diversity, conditions of misery, ignorance and injustice in the world - says prof. Capasso - it is possible to extinguish hotbeds of discord, riot, hatred; it must be understood that diversities, if harmonized, constitute a strength and a source of enrichment for all humanity, complementing each other instead of opposing each other. It is not a question of pursuing a system of universal harmony, as Fourier or Leibnitz wished, because we started from a pre-established universal harmony: the great inequalities existing between our brothers and sisters scattered throughout the world require our commitment to harmonize them. On this theme it is worth proposing an example: if in an orchestra everyone played on their own, a 'cacophony' would arise; if all the instruments were identical, it would be 'monotony'; the inequality of instruments and the harmonization of sounds is much better to arrive at a great ‘universal symphony’”.

The Secretary-General Michele Capasso, the Council of Ambassadors, the Board of Directors with Pia Molinari and Jacopo Molinari, the International Committee, the delegates of the autonomous sections "Fondazione Mediterraneo", "United States of Europe", "Accademia del Mediterraneo", "Kimiyya" and "Almamed" and the heads of the branch offices express their deep condolences for the death of Jacques Delors, former President of the European Commission.
In his remarks, Secretary-General Michele Capasso recalled the friend and convinced Europesist, sharing the comments of Mario Draghi and other representatives of the European institutions in describing Delors as "the father of modern Europe: from the Maastricht Treaty to the Schengen Agreements, he presided over epoch-making changes that still define the European Union, its potential and its aspirations".

Shortly before midnight on 24 December 2023, the Secretary-General of the United States of the World Michele Capasso made an appeal for peace in front of the 18th century nativity scene in the Peace Museum.
Symbolically, Marianita Carfora and Vincenzo Laudiero performed the Christmas carol “Tu scendi dalle stelle”.