Greek Prime Minister Alexis Tsipras called demands by the country's rescue lenders to slash pensions "incomprehensible," while European Union officials said their compromise proposals already leaned way over to Greece's side.
And instead of carping about the proposals made by the creditors, Greece should offer a more realistic plan, EU Commission Vice President Valdis Dombrovskis said. "It is important that the Greek side actually not only communicates what they do not want to do, but also what they do want to do."
The creditors want Greece to make economic reforms and Athens is balking.
If no deal is reached, Greece would face "dramatic" economic consequences, the country's own central bank warned.
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Creditors had until last week pegged Thursday's eurogroup meeting in Luxembourg of the 19 finance ministers of the eurozone as a date by which a breakthrough in the talks would have to be reached. Those expectations have faded, however, as both sides remain at odds over what reforms Greece should make.
Tsipras said his government wants "an honorable compromise," but warned that failing to reach a deal would hurt not only Greece's economy but also the rest of Europe.
"If Europe insists in this incomprehensible option if its political leadership insists then they must bear the cost of developments that will not be beneficial for anyone on Europe," Tsipras said after meeting Wednesday with Austrian Chancellor Werner Faymann.
Leaving the euro would clearly be economically painful for Greece, but economists disagree over how bad it would be for the rest of Europe.
Some member states are increasingly seeing a Greek exit, or Grexit, as a possibility, Dombrovskis acknowledged. "We are in the middle of June. By end of June, the current program expires and there are of course some discussions also on less favorable scenarios," he said.
Tsipras' five-month-old left-wing government wants new terms for its bailout program after previous administrations imposed draconian spending cuts and tax increases for five years.
Faymann said a deal would likely involve a further extension of the current bailout program, adding that he did not personally support any further "cross-the-board" pay cuts.
EU officials said they had already lowered their demands for a primary budget surplus this year from 3 percent to 1 percent and agreed to make the increase in the surplus over the next years more gradual.
A primary surplus is how much a government earns when not counting the costs of interest payments on debt.