The BBC's business editor Robert Peston talks to Rio Tinto's influential chairman, Paul Skinner.
The �70bn British/Australian company is one of the world's leading producers of iron ore, aluminium, copper, uranium, diamonds and coal.
It is also a beneficiary of China's huge appetite for raw materials and the surge in commodity prices.
On Leading Questions they discuss whether the commodities boom is sustainable, the ethics of doing business in Zimbabwe and the implications of last week's collapse of world trade talks.
One-Minute World News 
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