The United Nations marked its 80th anniversary with a solemn ceremony in New York as world leaders gathered for the annual General Assembly debate. The historic chamber was darkened and bathed in blue light to honor the milestone, reflecting on the organization’s founding mission of peace and cooperation.
General Assembly President Annalena Baerbock recalled how the UN was born in the aftermath of two devastating world wars and the “unspeakable horrors of the Holocaust,” at a time when 72 territories were still under colonial rule. The signing of the UN Charter on 26 June 1945, she said, was a promise from leaders to their people and to each other that humanity had learned from its darkest chapters.
Yet, Baerbock warned that “the hours indeed feel dark once again,” citing conflicts in Gaza, Ukraine, Sudan, and Haiti, as well as the surge of “unfiltered hatred online.” As the UN enters its ninth decade, she urged nations to resist despair and division. “We cannot take the easy path and simply give up,” she said. “We have to choose the right path; to show the world that we can be better together.”
UN Secretary-General António Guterres reflected on the organization’s early days, when many of its first staff and delegates still bore the scars of war. They were not idealists, he said, but realists who knew that “peace is the most courageous, the most practical, the most necessary pursuit of all.” Their vision created a place where all nations—large and small—could unite to tackle problems no country can solve alone.
Guterres warned that the principles of the UN are under assault as never before, with civilians targeted, international law trampled, poverty and hunger on the rise, the Sustainable Development Goals stalling, and the climate crisis escalating. At the same time, the world is shifting toward a multipolar order, demanding stronger collective action.
“To meet these challenges, we must not only defend the United Nations—but strengthen it,” he declared. Calling for “clarity, courage, and conviction,” Guterres urged global leaders to rise to the moment and fulfill the UN’s enduring promise of peace and cooperation in an increasingly fractured world.
