VIENNA, AUSTRIA- JULY 14: Foreign Minister of Iran, Mohammad Javad Zarif shakes hands with US Secretary of State John Kerry at the last working session of E 3+3 negotiations on July 14, 2015 in Vienna, Austria. Six world powers; US, UK, France, China, Russia and Germany have reached a deal with Iran on limiting Iranian nuclear activity. (Photo by Thomas Imo/Photothek via Getty Images)
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Photothek Thomas Imo