The United Nations Charter Signed (1945)
On June 26, 1945, representatives of 50 nations gathered in San Francisco's Veterans' Memorial Auditorium to sign the Charter of the United Nations — the founding document of the world's primary international organization. The signing ceremony capped two months of negotiations and came just seven weeks after Germany's surrender. The UN Charter entered into force on October 24, 1945 — now observed as United Nations Day. The organization it created has been, by turns, a forum for diplomacy, a source of humanitarian aid, a peacekeeping force, and a theater for Cold War confrontations. Its ideals and its limitations have been debated ever since.
Building a New World Order
The United Nations was conceived by the Allied powers during World War II as a successor to the League of Nations, which had failed to prevent the war. The name "United Nations" was first used by President Franklin Roosevelt in the Declaration by United Nations on January 1, 1942 — an early wartime alliance document. The structural framework for the organization was hammered out at the Dumbarton Oaks Conference in Washington in 1944, where the United States, Britain, the Soviet Union, and China agreed on the basic architecture: a General Assembly representing all member states, a Security Council with five permanent members holding veto power (the US, UK, USSR, France, and China), a Secretariat, and what would become the International Court of Justice. The San Francisco Conference — formally the United Nations Conference on International Organization — ran from April 25 to June 26, 1945. Fifty nations attended, representing a majority of the world's population. The deliberations were complex; there were arguments over the veto power, over the rights of colonial peoples, and over the organization's authority to intervene in members' internal affairs.
Did You Know?
Poland did not attend the San Francisco Conference — and thus was not one of the 51 original UN members — because the United States and Britain refused to recognize the Soviet-backed provisional government that had been installed in Warsaw. Poland was later allowed to sign the Charter and is considered an original member. The UN Charter required ratification by the five permanent Security Council members plus a majority of the other signatories before it could take effect; that threshold was crossed on October 24, 1945. The Soviet Union's representative signed the Charter at the ceremony in San Francisco, despite the already deteriorating relationship between the USSR and the Western Allies.
The Charter's Principles
The UN Charter opens with a preamble expressing determination "to save succeeding generations from the scourge of war" and "to reaffirm faith in fundamental human rights." Its principles include the sovereign equality of all member states, the settlement of disputes by peaceful means, the prohibition of the use of force against the territorial integrity or political independence of any state, and a commitment to promoting economic development and human rights. The Charter established the Security Council as the primary body responsible for international peace and security — with the five permanent members' veto power ensuring that no great-power conflict could be brought before the Council against one of those powers' wishes. This structure reflected the realities of 1945 but also built into the organization the contradictions that would haunt it through the Cold War and beyond: the veto could paralyze the Security Council whenever the interests of the permanent members conflicted, which in the Cold War was often.
The UN at Eighty
The United Nations now has 193 member states — virtually every recognized nation on earth. Its specialized agencies — the World Health Organization, UNICEF, the World Food Programme, the UN High Commissioner for Refugees, and dozens of others — do indispensable work in public health, development, and humanitarian relief. UN peacekeeping missions have operated in dozens of conflict zones. The Universal Declaration of Human Rights, adopted by the General Assembly in 1948, established a global human rights framework whose influence reaches far beyond the UN's own enforcement capacity. But the organization's failures are also part of the record: the Security Council deadlocked repeatedly during the Cold War; the UN's response to the Rwandan genocide in 1994 was catastrophically inadequate; reform of the Security Council to reflect the world of 2025 rather than the world of 1945 has been blocked for decades. The United Nations represents, in its imperfect and contested way, humanity's most sustained attempt to build institutions capable of managing global affairs. The Charter signed in San Francisco on June 26, 1945, was the foundation of that attempt.