South Africa celebrates Mandela's birthday

Across South Africa people have been celebrating Nelson Mandela's 95th birthday, bouyed by news that his condition in hospital is improving.

Africa Correspondent Rohit Kachroo reports from Pretoria.

Watch: Mandela's grand-daughter 'overwhelmed' he is still alive

Read: Winnie Mandela: 'Tata is on the mend'

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Mandela 'critical but stable'

Nelson Mandela remains in hospital in Pretoria in a critical but stable condition, President Jacob Zuma said. Doctors are working hard to keep the former president comfortable.