The international experience of “internal devaluations” is mostly one of failure. Argentina tried the deflation route to a real depreciation and, after three years of an ever-deepening recession/depression, it defaulted and exited its currency board peg.
The case of Latvia’s “successful” internal devaluation is not a model for the EZ periphery: Output fell by 20% and unemployment surged to 20%; the public debt was—unlike in the EZ periphery—negligible as a percentage of GDP and thus a small amount of official finance—a few billion euros—was enough to backstop the country without the massive balance-sheet effects of deflation; and the willingness of the policy makers to sweat blood and tears to avoid falling into the arms of the “Russian bear” was, for a while, unlimited (as opposed to the EZ periphery’s unwillingness to give up altogether its fiscal independence to Germany); and even after devaluation and default was avoided, the current backlash against such draconian adjustment is now very serious and risks undermining such efforts (while, equivalently, the social and political backlash against recessionary austerity is coming to a boil in the Eurozone periphery). - in The New York Times
Nouriel Roubini is an American economist. He teaches at New York University's Stern School of Business and is the chairman of Roubini Global Economics.