Graca Machel, the widow of former South African President Nelson Mandela, pays her respects at his coffin...
Graca Machel, the widow of former South African President Nelson Mandela, pays her respects at his coffin as he lies in state at the Union Buildings in Pretoria December 11, 2013. REUTERS/Marco Longari/Pool (SOUTH AFRICA - Tags: POLITICS TPX IMAGES OF THE DAY OBITUARY)