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International Monetary Fund (IMF) managing-director Christine Lagarde (L) speaks with president of the European Central Bank (ECB), Mario Draghi (R), prior to a "family photo" at the G20 finance ministers meeting in Chengdu, in China's Sichuan province on July 24, 2016. Government representatives and central bank chiefs from the world's top 20 economies have gathered in the southwestern Chinese city of Chengdu on July 23-24 with the impact of Britain's vote to leave the European Union (EU) high on the agenda. / AFP / FRED DUFOUR (Photo credit should read FRED DUFOUR/AFP/Getty Images)

International Monetary Fund (IMF) managing-director Christine Lagarde (L) speaks with president of the European Central Bank (ECB), Mario Draghi (R), prior to a "family photo" at the G20 finance ministers meeting in Chengdu, in China's Sichuan province on July 24, 2016.
Government representatives and central bank chiefs from the world's top 20 economies have gathered in the southwestern Chinese city of Chengdu on July 23-24 with the impact of Britain's vote to leave the European Union (EU) high on the agenda. / AFP / FRED DUFOUR        (Photo credit should read FRED DUFOUR/AFP/Getty Images)