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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Obama's lengthy handshake with Cuban counterpart

Barack Obama shook the hands of his Cuban counterpart Raul Castro in a landmark moment for the two countries at Nelson Mandela's memorial service today.

President Obama and the Cuban leader smiled and exchanged a few words as they embraced at the ceremony.

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