As South Africa prepares to host the World Cup, Archbishop Desmond Tutu has spoken of his sadness at the "mind-blowing" levels of corruption in the country.

He told Today presenter Justin Webb of his hope that South Africa, and the world, would recognise its common humanity and stop spending such "obscene" amounts on military defence.

"Doing wrong is wrong. It does not give you the satisfaction you thought it would," he said.

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