Strikes in Greece entered a 48-hour fever pitch Wednesday while parliament prepared to vote on sweeping new austerity measures aimed to stave off a default that could trigger disaster in the wider eurozone.

The protests came during what Greek Prime Minister George Papandreou described as the "most critical week" facing Greece and the eurozone.

Appealing for national unity, Papandreou said late Tuesday: "We must persevere in this war as people, as a government, as a parliamentary group in order for the country to win it."

"We will win for the country, we will persevere," he said. "That is why I'm here."

Unions representing half of Greece's 4 million workers have called for a 48-hour strike beginning Wednesday, ahead of a Thursday vote in parliament over austerity measures the government must pass in order to secure the next 8-billion-euro ($11 billion) tranche of Greece's international bailout loans and avert insolvency.

Country in chaos

News service in Greece was disrupted as thousands of journalists took to Athens' streets Tuesday. Ships remained docked, trains were halted and trash continued to pile up in Greece as individual strikes gave the country a preview of what one newspaper was describing as "the mother of all strikes" ahead of parliament's Thursday vote on tougher cuts meant to secure Greece's next installment of international loans.

Civil servants continued to occupy the buildings of the housing and finance ministries in protest of the government's proposed cuts to the public sector.

Air traffic controllers said they planned to keep all flights grounded on Wednesday and Thursday. Retailers, taxi drivers and lawyers have all threatened to go on strike as well.

On Monday, the Greek government said it would consider deploying the military as rubbish-collectors, amid a municipal employee-led blockade of the city's main landfill.

The trash is piling up in Greece as the government seeks solutions

Speaking in Vienna, Minister for Regional Development Michalis Chrysochoidis told reporters that the protests were understandable.

"I believe that if we had this phenomenon of cutting salaries, pensions and incomes in other countries, Europe would have a revolution," he said, adding that he was confident the Socialist government would see the draft legislation passed - despite its narrow four-seat majority in parliament and mounting dissent.

One Socialist lawmaker, Thomas Robopoulos, resigned his seat in parliament Monday, calling the new round of austerity measures "unfair and anti-labor."

Without the next installment of international aid from the European Union, the European Central Bank and the International Monetary Fund, Greece will not be able to pay employee salaries, pensions and other bills.

Germany plays down summit

The pressure to come up with a definitive solution to solve and contain the Greek debt crisis is not just on Athens but on the eurozone as a whole.

Don't expect a "definitive solution" yet, said Schäuble

German Finance Minister Wolfgang Schäuble told a conference in Dusseldorf that European governments would adopt a five-point plan at the Sunday summit in Brussels, but he warned that the meeting would not yield a "definitive solution" to the Greek debt crisis.

Leaders are expected to propose a plan to recapitalize banks and reduce Greece's debt by asking the country's private creditors to accept steeper writedowns on their holdings than previously agreed. Leading German and French banks have said they will resist forced recapitalization.

Meanwhile, a spokesman for German Chancellor Angela Merkel said Berlin was working "intensively" to figure out how German banks could be involved in a second bailout for Greece.

Greece's overall debt is predicted to rise to 357 billion euros ($491 billion) this year.

Author: David Levitz (AFP, AP, dpa, Reuters)

Editor: Mark Hallam