Obama leads tributes to Mandela at memorial service

US President Barack Obama has led the tributes to Nelson Mandela saying that South Africa's democracy is his "cherished legacy." Thousands gathered in Johannesburg to celebrate the life of the former South African president.

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Gordon Brown: South Africans saw Mandela as a friend

Former Prime Minister Gordon Brown, who was at the memorial service, has said that South Africans see Nelson Mandela as "not just a president but as a friend".

He told ITV News that it was a "privilege" to work with Mandela, adding that he "teaches us that nothing is impossible, as long as you have hope".

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