African National Congress leader Nelson Mandela casts his vote at the Ohlange High School hall in Inanda, South Africa, 10 miles north of Durban, April 27, 1994, for South Africa's first all-race elections. Mandela is strongly favored to become South Africa's first black president after results are announced later this week. (AP Photo/Peter DeJong)

African National congress leader Nelson Mandela greets a cheering crowd while campaigning, on Saturday, April 2, 1994 in Mahwelereng in northern Transvaal. Mandela hinted during a brief interview that Inkatha leader Mangosuthu Buthelezi still might participate in April 27th all-race elections. (AP Photo/Peter Dejong)

President-Elect Nelson Mandela addresses a rally of several thousand supporters of all races at a national thanks giving day rally in Soweto May 8, 1994.

African National Congress President Nelson Mandela gives the black power salute to a group of supporters gathered on the road to greet him as he drove by near Maphoboza, Sunday, Nov. 21, 1993. Mandela finished his first campaign swing through the violent Natal province, one of the most crucial voting grounds in the upcoming April 27, 1994 elections. (AP Photo/David Brauchli)

Nelson Mandela, ANC leader, shown giving the black power salute on Feb. 13, 1990. (AP Photo/John Parkin)

(FILES) This photo taken on August 28, 2007 shows former South African President Nelson Mandela waving to the media as he arrives outside 10 Downing Street, in central London. Nelson Mandela, who was readmitted to hospital on June 8, 2013 for the second time in as many months, spent 27 years as a prisoner of apartheid before embarking on a "long walk to freedom" which saw him crowned South Africa's first black president and a Nobel peace laureate. Increasingly frail, the 94-year-old remains one of the world's most beloved figures even as his public appearances have become rare. AFP PHOTO/LEON NEAL

ANC leader Nelson Mandela in a jubilant pose after casting his vote on Wednesday, April 27, 1994 at Ohlange High School hall in Inanda, 10 miles (15 kilometers) north of Durban, for South Africa' s first all-race elections. (AP Photo/Peter Dejong)

With the Washington Monument in the background, South African President Nelson Mandela is greeted upon his arrival in Washington by students from Washington's Anacostia High School on Tuesday, Oct. 4, 1994. Afterward President Mandela went to the White House for a meeting with President Bill Clinton. (AP Photo/Charles Tasnadi)

South African President Nelson Mandela prepares to blow a kiss prior to addressing a joint meeting of Congress, Thursday Oct. 6, 1994 at Capitol Hill in Washington. Vice President Al Gore, left, and House Speaker Thomas Foley of Washington applaud the South African President. (AP Photo/Greg Gibson)

Nelson Mandela, South Africa's president, arrives at John F. Kennedy International Airport on Saturday, Oct. 1, 1994 in New York. Mandela, 76, who won the Nobel Peace Prize last year, has been praised for leading South Africa through a peaceful revolution. He had no public schedule for Saturday. (AP Photo/J. Kirk Condyles)

South African President Nelson Mandela waves as he and President Clinton stand on the podium during ceremony in honor of Mandela's state visit on Tuesday, Oct. 4, 1994 at the White House. (AP Photo/Ron Edmonds)

South African President Nelson Mandela holds a model of a painted BMW auto mobile presented to him by National Museum of Women in the Arts chairwoman Wilhelmina Holladay on Wednesday, Oct. 5, 1994 at the museum in Washington. The South African president toured an exhibit by South African artist Esther Mahlangu at the museum which includes the original mural-painted automobile. (AP Photo/Wilfred Lee)

President Bill Clinton answers a reporters question during his joint news conference with South African President Nelson Mandela on Wednesday, Oct. 5, 1994 on the South Lawn of the White House. Capping two days of pomp and ceremony, President Clinton announced a $100 million fund to help entrepreneurs in South Africa and a high-level commission to boost energy, education and development projects. (AP Photo/Marcy Nighswander)

PHOTO: EAST NEWS/AFP Nelson Mandela (C), celebrating his 89th birthday, stands flanked by ex-US president Jimmy Carter (R) and former UN chief Kofi Annan (L), during the launching ceremony of the group known as The Elders 18 July 2007 in Johannesburg. A brains trust of elder statesmen such as ex-US president Jimmy Carter and former UN chief Kofi Annan, former Chinese foreign minister Li Zhaoxing, former Irish president Mary Robinson and Bangladeshi Nobel prize winner Muhammad Yunus was launched today with a call to bring hope to a conflict-ridden world. Mandela said "Together we will work to support courage where there is fear, foster agreement where there is conflict and inspire hope where there is despair."

South African President Nelson Mandela speaks after receiving an Honorary Doctor ate of Law degree at Howard University Friday, Oct. 7, 1994, in Washington. Mandela will depart Washington later tonight after a four state visit. (AP Photo/Mark Wilson)

NO ARCHIVE/NO SALES/RESTRICTED TO EDITORIAL USE Former South African president and Nobel peace prize winner Nelson Mandela (R) meets on June 03, 2010 South African Nartional Football Team "Bafana Bafana" midfielder Steven Pienaar (L) and the rest of the team at the Nelson Mandela Foundation. AFP PHOTO / ZWIDEPHOTOS

South African President, Nelson Mandela, adjusts his earphone during the opening ceremony of the 30th summit of the Organization of the African Unity in Tunis, on Monday June 13, 1994. It is the first time that a South African head of the state attends the OAU summit. (AP Photo/ Laurent Rebours)

A picture taken on December 7, 2008 shows former South African president Nelson Mandela hugging his great grandaughter Zenani Mandela during a visit to Kefuoe Seakamela's family at their home in Diepkloof, Soweto, outside Johannesburg. Nelson Mandela's 13-year-old great granddaughter was killed early on June 11, 2010 when her car overturned on a Johannesburg highway after South Africa's World Cup concert, his office said. The driver of the car that overturned and killed Zenani was drunk when the accident happened after the World Cup kick-off concert, police added. AFP PHOTO / Jennifer Bruce - The Star - HO = NO SALES, RESTRICTED TO EDITORIAL USE, SOUTH AFRICA OUT

ANC leader Nelson Mandela, left, and Dutch Prime Minister Ruud Lubbers, answer questions from journalists outside the Prime Minister's residence in The Hague on Thursday, February 17, 1994. Mandela is on a two-day visit to the Netherlands. (AP Photo/Peter Dejong)

African National Congress (ANC) President Nelson Mandela greets young children Monday, March 7, 1994, on his arrival at an election rally in Sekororo in the Lebowa homeland, South Africa. Mandela is visiting the Northern Part of South Africa to campaign for votes for the upcoming all race general election set for April. (AP Photo/Joao Silva)