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In October 1945, countries ratified the founding charter of a new organsation, the United Nations, that it was hoped would ensure there was never a world war again. Earlier that year thousands of delegates from around the world had met in San Francisco to hammer out the charter. Witness talks to two people who worked for the UN that year; and to historian Stephen Schlesinger.

Photo: a delegate from Saudi Arabia addresses the UN's founding conference in San Francisco (Credit: the UN)