Greece debt crisis

A woman holds the Greek, left, and the Syriza left party flags at Syntagma square in front of the parliament in central Athens, on Saturday, July 4, 2015.

A woman holds a banner with the following words on the back (not seen) ‘then we take Brussels’ during a solidarity demonstration for Greece one day ahead of the 05 July Greek referendum.

People carry an anti-Troika banner during a solidarity demonstration for Greece one day ahead of the 05 July Greek referendum, in Lisbon, Portugal.

Shoppers stand in an aisle with empty shelves in a supermarket in Athens, Greece, on July 4, 2015.

A newsagent hangs newpapers bearing “No” and “Yes” headlines in Athens, Greece, on July 4, 2015.

A ballot at a polling station in Athens, Greece, on the eve of the Greek referendum.

Giorgos Chatzifotiadis cries outside a national bank branch, as pensioners queue to withdraw their pensions July 3, 2015. Chatzifotiadis had visited three banks in Thessaloniki in the hope of withdrawing a pension on behalf of his wife, but all in vain. When he was told at the fourth that he could not withdraw his 120 euros ($133), he collapsed in tears.

Giorgos Chatzifotiadis cries outside a national bank branch July 3, 2013, as pensioners (unseen) line up to withdraw their pensions. Chatzifotiadis visited four banks total in the hope of withdrawing pension money on behalf of his wife. When he was told at the fourth that he could not withdraw his 120 euros ($133), he collapsed in tears.