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Barack Obama repeals "don't ask, don't tell" law on gay military personnel

US President Barack Obama has signed a landmark law allowing gay people serving in the military to be open about their sexuality.

The law, which was approved by Congress last week, was one of the campaign pledges on which Mr Obama was elected in 2008.

The "don't ask, don't tell" policy has prevented openly gay people serving in the US armed forces.

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