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Elena Bunina, general director of Yandex NV, looks on during a panel session at the Moscow Financial Forum in Moscow, Russia, on Thursday, Sept. 6, 2018. Russia is ready to take the emergency step of buying its own ruble debt if a new wave of U.S. sanctions threatens to upend the market. Photographer: Andrey Rudakov/Bloomberg via Getty Images

Elena Bunina, general director of Yandex NV, looks on during a panel session at the Moscow Financial Forum in Moscow, Russia, on Thursday, Sept. 6, 2018. Russia is ready to take the emergency step of buying its own ruble debt if a new wave of U.S. sanctions threatens to upend the market. Photographer: Andrey Rudakov/Bloomberg via Getty Images