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Giorgos Chatzifotiadis, a distressed pensioner sits on the ground outside a national bank branch, as banks opened only for pensioners to allow them to withdraw their pensions, with a limit of 120 euros, in Thessaloniki, on July 3, 2015. Greece is almost evenly split over a crucial weekend referendum that could decide its financial fate, with a 'Yes' result possibly ahead by a whisker, the latest survey Friday showed. Prime Minister Alexis Tsipras's government is asking Greece's voters to vote 'No' to a technically phrased question asking if they are willing to accept more tough austerity conditions from international creditors in exchange for bailout funds. / AFP / SAKIS MITROLIDIS (Photo credit should read SAKIS MITROLIDIS/AFP/Getty Images)

Giorgos Chatzifotiadis, a distressed pensioner sits on the ground outside a national bank branch, as banks opened only for pensioners to allow them to withdraw their pensions, with a limit of 120 euros, in Thessaloniki, on July 3, 2015. Greece is almost evenly split over a crucial weekend referendum that could decide its financial fate, with a 'Yes' result possibly ahead by a whisker, the latest survey Friday showed. Prime Minister Alexis Tsipras's government is asking Greece's voters to vote 'No' to a technically phrased question asking if they are willing to accept more tough austerity conditions from international creditors in exchange for bailout funds.  / AFP / SAKIS MITROLIDIS        (Photo credit should read SAKIS MITROLIDIS/AFP/Getty Images)