exit of any of the countries in the euro region is almost inconceivable: the back-door exit

The exit of any of the countries in the euro region from the single currency would cause "complete chaos" in that country and is "almost inconceivable", Erik Nielsen, global chief economist at UniCredit, told CNBC Tuesday as the euro zone debt crisis continued to loom over European markets.

Greater fiscal union within the euro zone and issuing a euro bond are two options that have been mooted.
There are increasing concerns that a double-dip recession could occur, with economists such as Nouriel Roubini warning that Europe and the US could be in an even worse place than during the last economic crisis. 
The future of the euro [ EUR=X 1.4177  +0.0085 (+0.60%) ] itself has come under scrutiny, with some arguing that struggling economies such as Greece may have to exit the currency.
"Every contract in Greek law is in the euro. Every creditor would have a claim on a debtor whose income suddenly became in the drachma," Nielsen, formerly of Goldman Sachs, said. "There would be defaults across the private sector and complete chaos."

He believes that a "back-door" exit from the euro is more likely, citing the example of the situation in California during 2009, when the state started issuing IOUs to its creditors, as a way a country could achieve that.

The euro zone is facing the twin difficulties of hefty debt burdens and low growth.


http://m.cnbc.com/us_news/44397311?refresh=true

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η Kαλιφόρνια τον Ιούλιο 2009 πήρε μερικά χαρτιά και έγραψε με τον laser του γραφείου του φίλου του Ψωμιάδη στην επικεφαλίδα " Ι O U " [I owe unto], ήτοι "Χρωστάω μέχρι", από κάτω έβαλε ποσό και ΜΕΛΛΟΝΤΙΚΗ ημερομηνία [faq about IOUs].
Αυτό σημαίνει πραγματικά "δεν υπάρχει σάλιο"._

δείτε και το Η λύση του «διπλού νομίσματος»