![Obama sibling writes about abusive father](../../images/attachement/jpg/site1/20091105/0013729e41140c5c65d60e.jpg)
Mark Okoth Obama Ndesandjo, a half-brother of US President Barack Obama, introduces his first novel "Nairobi to Shenzhen" during a pre-launch news conference held by the American Chamber of Commerce in South China, in the southern Chinese city of Guangzhou November 4, 2009.[Agencies]
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