The Spanish Prisoner by Krugman

But problems were developing under the surface. During the boom, prices and wages rose more rapidly in Spain than in the rest of Europe, helping to feed a large trade deficit. And when the bubble burst, Spanish industry was left with costs that made it uncompetitive with other nations.

Now what? If Spain still had its own currency, like the United States -- or like Britain, which shares some of the same characteristics -- it could have let that currency fall, making its industry competitive again. But with Spain on the euro, that option isn’t available. Instead, Spain must achieve "internal devaluation": it must cut wages and prices until its costs are back in line with its neighbors.

And internal devaluation is an ugly affair. For one thing, it’s slow: it normally take years of high unemployment to push wages down. Beyond that, falling wages mean falling incomes, while debt stays the same. So internal devaluation worsens the private sector’s debt problems.

What all this means for Spain is very poor economic prospects over the next few years. America’s recovery has been disappointing, especially in terms of jobs -- but at least we’ve seen some growth, with real G.D.P. more or less back to its pre-crisis peak, and we can reasonably expect future growth to help bring our deficit under control. Spain, on the other hand, hasn’t recovered at all. And the lack of recovery translates into fears about Spain’s fiscal future.