Over the past three months, the relationship between Rio Tinto and China has lurched from one crisis to the next.
From the disintegration of a proposed investment in Rio by state-owned miner Chinalco, through painful negotiations over iron ore prices, to the eventual arrest of four Rio employees on charges of bribery, the relationship has been stretched to its limits.
But Rio's first-half results yesterday revealed just how important the parties are to each other, and how much both need a return to normality.
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