Eastwood realised Mandela's 'calibre' on Robben Island visit

Clint Eastwood didn’t know much about Nelson Mandela before ‘Invictus’.

The Hollywood veteran, who directed Morgan Freeman and Matt Damon in the tale of the first black South African president teaming up with the captain of the Springbok’s rugby team to create racial harmony, admits it wasn’t until he visited Mandela’s prison cell that he understood him.