A Meeting Of Great Minds: During his 1966 visit to South Africa, Sen. Robert F. Kennedy met with anti-apartheid activist Chief Luthuli and later spoke publicly about their meeting. Because of a government ban on media coverage of Luthuli, it was the first news many had of their leader in more than five years. Shoreline Productions hide caption

itoggle caption Shoreline Productions

President Obama looks out the window of the Robben Island prison cell that once held Nelson Mandela. The president and his family visited the prison on Sunday. Gary Cameron /Reuters /Landov hide caption

itoggle caption Gary Cameron /Reuters /Landov

Friday in Pretoria, South Africa, people gathered outside a hospital to pray for former President Nelson Mandela. He remains in critical condition with a lung infection. Jeff J. Mitchell/Getty Images hide caption

itoggle caption Jeff J. Mitchell/Getty Images

The Capitol dome is seen behind the Capitol Power Plant, which provides power to buildings in the Capitol complex in Washington, D.C. Carolyn Kaster/AP hide caption

itoggle caption Carolyn Kaster/AP

President Obama glances at Britain's Prime Minister David Cameron (right) during a news conference with European Union officials at the G-8 summit in Enniskillen, Northern Ireland, on Monday. WPA Pool/Getty Images hide caption

itoggle caption WPA Pool/Getty Images

Some Republican lawmakers hope President Obama sends arms to Syria's rebels — and cruise missiles after Syrian military targets. Jonathan Sunderman/AP hide caption

itoggle caption Jonathan Sunderman/AP

President Obama on Thursday in Mooresville, N.C. Davis Turner /EPA /LANDOV hide caption

itoggle caption Davis Turner /EPA /LANDOV