Union Buildings

President Barack Obama shakes hands with Cuban President Raul Castro during the memorial service for former South African President Nelson Mandela at FNB Stadium  on Dec. 10, 2013 in Johannesburg, South Africa. (credit: Chip Somodevilla/Getty Images)

Jimmy Carter: Obama-Castro Handshake ‘Was Something Significant’

President Obama is among many dignitaries to speak at the memorial service.