A vendor holds twenty euro banknotes as he sells Greek national flags to supporters of the "OXI" or "No" vote on Syntagma square as early results show them ahead in the Greek referendum in Athens, Greece, on Sunday, July 5, 2015. Greeks are heading to the polls Sunday, evenly split on a referendum to chart a new course in their five-year economic crisis. Photographer: Kostas Tsironis/Bloomberg via Getty Images
