An installation reading "YES" in reference to the upcoming referendum taking place on Sunday is seen in Athens, Greece, July 3, 2015. European Commission President Jean-Claude Juncker said Friday in Luxembourg that the Greek government's position will be "dramatically" weakened in negotiations with creditors if the Greek vote "no" in Sunday's referendum. Photo: Xinhua
A banner reading "YES" in reference to the upcoming referendum taking place on Sunday is hung on a building in Athens, Greece, July 3, 2015. European Commission President Jean-Claude Juncker said Friday in Luxembourg that the Greek government's position will be "dramatically" weakened in negotiations with creditors if the Greek vote "no" in Sunday's referendum. Photo: Xinhua
An installation reading "YES" in reference to the upcoming referendum taking place on Sunday is seen in Athens, Greece, July 3, 2015. European Commission President Jean-Claude Juncker said Friday in Luxembourg that the Greek government's position will be "dramatically" weakened in negotiations with creditors if the Greek vote "no" in Sunday's referendum. Photo: Xinhua
Workers install a banner reading "No" in reference to the upcoming referendum taking place on Sunday in Athens, Greece, July 3, 2015. European Commission President Jean-Claude Juncker said Friday in Luxembourg that the Greek government's position will be "dramatically" weakened in negotiations with creditors if the Greek vote "no" in Sunday's referendum. Photo: Xinhua
A poster reading "No" in reference to the upcoming referendum taking place on Sunday is seen on a street in Athens, Greece, July 3, 2015. European Commission President Jean-Claude Juncker said Friday in Luxembourg that the Greek government's position will be "dramatically" weakened in negotiations with creditors if the Greek vote "no" in Sunday's referendum. Photo: Xinhua
A banner reading "No" in reference to the upcoming referendum taking place on Sunday is seen in Athens, Greece, July 3, 2015. European Commission President Jean-Claude Juncker said Friday in Luxembourg that the Greek government's position will be "dramatically" weakened in negotiations with creditors if the Greek vote "no" in Sunday's referendum. Photo: Xinhua
Flags reading "No" in reference to the upcoming referendum taking place on Sunday is seen on a street in Athens, Greece, July 3, 2015. European Commission President Jean-Claude Juncker said Friday in Luxembourg that the Greek government's position will be "dramatically" weakened in negotiations with creditors if the Greek vote "no" in Sunday's referendum. Photo: Xinhua
A banner reading "No" in reference to the upcoming referendum taking place on Sunday is seen in Athens, Greece, July 3, 2015. European Commission President Jean-Claude Juncker said Friday in Luxembourg that the Greek government's position will be "dramatically" weakened in negotiations with creditors if the Greek vote "no" in Sunday's referendum. Photo: Xinhua
Flags reading "No" in reference to the upcoming referendum taking place on Sunday is seen on a street in Athens, Greece, July 3, 2015. European Commission President Jean-Claude Juncker said Friday in Luxembourg that the Greek government's position will be "dramatically" weakened in negotiations with creditors if the Greek vote "no" in Sunday's referendum. Photo: Xinhua
Photo taken on July 3, 2015 shows a press centre in Athens, set by Secretariat-General of Communication in Zappeion Hall to facilitate media coverage of July 5 referendum. Photo: Xinhua
Photo taken on July 3, 2015 shows a press centre in Athens, set by Secretariat-General of Communication in Zappeion Hall to facilitate media coverage of July 5 referendum. Photo: Xinhua
Photo taken on July 3, 2015 shows a press centre in Athens, set by Secretariat-General of Communication in Zappeion Hall to facilitate media coverage of July 5 referendum. Photo: Xinhua