<Table> <Tr> <Td> </Td> <Td> Wikisource has original text related to this article: Charter of the United Nations </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> Wikisource has original text related to this article: Charter of the United Nations </Td> </Tr> <P> The Preamble reads as follows: </P> <Dl> <Dt> WE THE PEOPLES OF THE UNITED NATIONS DETERMINED </Dt> </Dl>

What does the un preamble promise to do