International Day of Multilateralism and Diplomacy for Peace, 24 April 2025

Through the resolution International Day of Multilateralism and Diplomacy for Peace (A/RES/73/127), adopted on 12 December 2018, the United Nations, on 24 April, calls on all Member States, as well as organizations within its structure, to honor the International Day of Multilateralism and Diplomacy for Peace. 

Multilateralism, in international relations, refers to cooperation between more than two states. However, the concept cannot be explained only by this definition; multilateralism embodies the principles of solidarity, consultation, and inclusion. In this sense, it is understood as a system of cooperation and organization of the international order.

At the General Debate in September 2018 many world leaders and figures have stressed their engagement with multilateralism and international peace and security efforts. The latter High-level Dialogue on Renewing the Commitment to Multilateralism on 31 October 2018 amplified these endeavors further. 

With the adoption of the Pact for the Future in September 2024, world leaders reaffirmed their commitment to peace, sustainable development, and the protection of human rights. In today's world, indeed, the values of multilateralism and diplomacy are more crucial than ever.

Multilateralism shapes the United Nations. The UN serves its member states by helping them reach agreements on important issues for humanity. The UN Charter establishes it a “centre for harmonizing the actions of nations in the attainment of these common ends” in order to eliminate “threats to the peace” through realizing “international cooperation”. In this regard, it must work for “respect for human rights and for fundamental freedoms for all”.  

Over the years, multilateralism has evolved within the UN. The number of member states has increased from 51 to 193, and new non-state actors, such as non-governmental organizations (NGOs), international organizations (IOs), as well as private actors, have joined the multilateral framework. This is exemplified by the presence of around a thousand observer NGOs and IOs at the UN today. 

Looking at the impact factor, the multilateral foundation on which the UN is built has facilitated significant successes so far — from the eradication of smallpox to the conclusion of landmark international treaties and agreements. 

To learn more on the United Nations and multilateralism, visit the web.