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South African Paralympic athlete 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 17, 2014. Pistorius is on trial for murdering his girlfriend Reeva Steenkamp at his suburban Pretoria home on Valentine's Day last year. He says he mistook her for an intruder. AFP PHOTO/POOL/Siphiwe Sibeko (Photo credit should read SIPHIWE SIBEKO/AFP/Getty Images)
South African Paralympic athlete 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 17, 2014. Pistorius is on trial for murdering his girlfriend Reeva Steenkamp at his suburban Pretoria home on Valentine's Day last year. He says he mistook her for an intruder. AFP PHOTO/POOL/Siphiwe Sibeko (Photo credit should read SIPHIWE SIBEKO/AFP/Getty Images)

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Pistorius has hostile cross-examination

Oscar Pistorius, on trial for killing his girlfriend, gets emotional on the stand. CNN's Robyn Curnow reports.

Pistorius has hostile cross-examination

Oscar Pistorius, on trial for killing his girlfriend, gets emotional on the stand. CNN's Robyn Curnow reports.