The stage is set in Buenos Aires for a performance of warm smiles and hearty handshakes between the presidents of the US and China at the G20 meeting next week.
But investors expect there will be a different dynamic playing out behind the scenes, based on months of tension over power and trade between Donald Trump and Xi Jinping.
During a year in which trade spats have become increasingly fraught, investors have suffered from rising uncertainty and a turbulent ride in global markets.
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