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June 26, 1945Reputable source · 2 sourcesWell documented

The United Nations Is Founded

On the timeline · around June 26, 1945 · The United Nations Is Founded19451946

What happened

Delegates of 50 nations, meeting at the San Francisco Conference, signed the Charter of the United Nations on June 26, 1945. The Charter entered into force on October 24, 1945, establishing a new international organization to maintain peace and security.

Why it matters

Created out of the determination to prevent another world war, the UN became the central institution of the postwar international order.

Sources