Xi Jinping (Photo: Wiki commons)

Vice President Joe Biden is in China. Part of his remit is to reassure Chinese leaders that their more than a trillion dollars worth of US debt is safe. But another reason for the visit is to take the measure of Biden's VP counterpart: Xi Jinping, the person likely to succeed President Hu Jintao in 2013. Lisa Mullins talks about the Biden visit with The World's Mark Kay Magistad in Beijing.

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