Multilateralism, a collaborative approach among multiple countries, is crucial for fostering peace and resolving global issues. The United Nations plays a pivotal role in promoting multilateralism, facilitating cooperation and protecting human rights worldwide. The rise in the number of UN member states and the inclusion of non-governmental organizations and international organizations have expanded the scope of multilateral diplomacy. The principles of consultation, inclusion, and solidarity underpin multilateralism, shaping a collective political project focused on shared values. As leaders prepare for the UN Summit of the Future, reinvigorating multilateralism is essential for achieving peace, development, and a better world.