Pistorius testimony key to defense case

Oscar Pistorius sits in the dock during his trial for the murder of his girlfriend Reeva Steenkamp, at the North Gauteng High Court in Pretoria, on March 25, 2014.
Oscar Pistorius sits in the dock during his trial for the murder of his girlfriend Reeva Steenkamp, at the North Gauteng High Court in Pretoria, on March 25, 2014.

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    Pistorius testimony key to defense case

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CNN's Robyn Curnow and legal analyst Kelly Phelps preview the defense case of Oscar Pistorius.