Janet Yellen defended the global dominance of the dollar after BRICS leaders questioned the outsized role of the world’s premier reserve currency in global trade.

• South Africa’s president Cyril Ramaphosa appeared to back calls from Brazil’s president Luiz Inácio Lula da Silva to review their reliance on the greenback at a finance summit in Paris on Friday.
• Brazil has advocated switching to trading in domestic currencies and other alternatives.

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