Greeks voted on Sunday whether to accept or reject the tough terms of an aid offer to stave off financial collapse, in a referendum that may determine their future in Europe’s common currency. The country of 11 million people is deeply divided over whether to accept an offer by international creditors that left-wing Prime Minister Alexis Tsipras, elected in January on a promise to end years of crippling austerity, calls a “humiliation”. “I voted ‘No’ to the ‘Yes’ that our European partners insist I choose,” said Eleni Deligainni, 43, in Athens.