A passerby walks past the entrance to the Mediclinic Heart Hospital where former President Nelson Mandela is being treated, in Pretoria, South Africa Wednesday, June 12, 2013. Nelson Ma

 

              A passerby walks past the entrance to the Mediclinic Heart Hospital where former President Nelson Mandela is being treated, in Pretoria, South Africa Wednesday, June 12, 2013. Nelson Ma
A passerby walks past the entrance to the Mediclinic Heart Hospital where former President Nelson Mandela is being treated, in Pretoria, South Africa Wednesday, June 12, 2013. Nelson Mandela began responding better to treatment Wednesday morning for a recurring lung infection following "a difficult last few days," South Africa's president said. (AP Photo/Ben Curtis)