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![Russian billionaires Boris and Arkady Rotenberg at the 2017 Formula 1 Russian Grand Prix in Sochi, April 30, 2017 (Mikhail Svetlov/Getty Images)](/sites/default/files/styles/16_9_sm/public/researches/thumb/13821/feature_rotenberg_featured.jpg?h=ae002e9f&itok=OUNH1zZW)
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Russian billionaires Boris and Arkady Rotenberg at the 2017 Formula 1 Russian Grand Prix in Sochi, April 30, 2017 (Mikhail Svetlov/Getty Images)
![Russian rubles (Josef F. Stuefer/Getty Images)](/sites/default/files/styles/16_9_sm/public/researches/thumb/13209/feature_img_7770_jpg.jpg?h=ae002e9f&itok=xfuIv9uw)
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Russian rubles (Josef F. Stuefer/Getty Images)