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©Ralf Hirschberger/DPA/MAXPPP ; 30 November 2018, Argentina, Buenos Aires: Mohammed bin Salman (r), Saudi Crown Prince and Vladimir Putin, President of Russia, are waiting for the family photo of all participants at the G20 Summit Conference Centre in Buenos Aires. From 30.11.-1.12.2018 the G20 summit will take place in Buenos Aires. The "Group of 20" unites the strongest industrial nations and emerging economies. Photo: Ralf Hirschberger/dpa