… Day by day, fears are growing that Greece or another weak country may default on its sovereign debt obligations, forcing the richer countries in Europe to ride to the rescue or risk having one or more of its most vulnerable members leave the 16-nation euro zone.


Many European economists discount such a fracture as a remote possibility. But that doesn’t mean Europe has safely emerged from crisis.

Instead, it faces a longer-term challenge to restore the fiscal credibility of at least half the countries that use the euro. The true test for the world’s largest common currency zone, analysts say, will be whether it can withstand the economic, political and social strains once the European Central Bank begins to raise interest rates in response to economic improvements in Germany, France and other Northern European countries.

At that point, the laggards on the union’s fringe — Portugal, Ireland, Italy, Greece and Spain (the so-called Piigs) — will face even tougher choices to cope with what looks like several more years of stagnant economies, high unemployment and gaping budget deficits….

… [T]he mandate of the European Central Bank is to ensure broad price stability in the union, not to look out for the interests of individual nations.

France and Germany have already emerged from the recession….

Yet on the periphery, the hangover from more than five years of a credit-infused boom shows little sign of diminishing.

Ireland, the first economy to stumble, has taken the most severe fiscal action, cutting public wages sharply. A new Greek government, punished by the rough treatment of bond investors no longer willing to countenance soft promises of reform, is just now promising steep spending cuts. But it is not clear whether the political system in Greece will accept them.

Meanwhile, Spain, to the frustration of many major lenders, seems to be putting off difficult fiscal questions in the hope that its economy will soon recover….

Paradoxically, the very dysfunction of a struggling two-tier Europe may represent the best chance for recovery if it leads to devaluation of the euro against the dollar, which many see as long overdue.

Already, in the last month, the euro has lost more than 5 percent of its value against the dollar. Many economists predict that the currency will weaken more as the growth gap between the core and peripheral states creates further disharmony.

Then, it will be the type of export-led recovery that has helped the United States and is likely to soon help Britain that could bring Europe’s economies closer to convergence….

Any such recovery will not be rapid, however. In Ireland, where prices are falling by 5 percent, reordering the economy from its deep reliance on construction and property will take years. And an already unpopular Irish government, along with others on Europe’s periphery, will have a difficult time explaining to recession-bruised voters why they must accept an central bank’s decision to raise interest rates — a move that may protect German and French savers from inflation but that does little for the many millions of citizens out of work.

Yet the painful, historic steps taken by Ireland offer a ray of hope, says Philip Lane, a professor of international macroeconomics at Trinity College Dublin who oversees the widely read Irish Economy blog.

He points to signs of wage compression in the hard-hit service, property and government sectors as proof that there is a recognition that recovery, distant as it may seem, must occur inside the euro zone, not outside.

“It takes a crisis to learn a lesson,” Mr. Lane said. “Could it be that by getting countries to change their behavior you might get improved cooperation within the euro zone?

“What does not kill you,” he added, “often makes you stronger.”

This article is excerpted from the 31 December 2009 edition of “The New York Times”.