• South Africa prays for 'critical' Nelson Mandela

    Nelson Mandela's condition has been described as critical for the first time, two weeks after he was admitted to hospital with a lung infection. His wife Graca Machel has been keeping a constant vigil by the beloved former South African leader's bedside. On Sunday, she was joined by other members of his family, including his former wife Winnie, daughter Makaziwe and granddaughter Ndileka. President Jacob Zuma has also visited, and confirmed that Mr Mandela's health has deteriorated over the past 24 hours.     CLICK ON PHOTOS TO SEE FULL GALLERY He said that doctors were still "doing everything possible" to try and improve