According to him, the biggest mistake in creating a single currency union was the fact that the process was not preceded by the formation of a new political association.
"The euro has already collapsed, we should not cherish illusions," Lafontaine said, calling the single European currency "a step backward in the framework of the historic project of European integration."
He added that the euro cannot function "without a European economic government," and that the unemployment, imposed by the German government, "cannot become the basis for European unity."
From Lafontaine's point of view, Greece must turn back to the Drachma, its former currency, to regain its footing. "It is absolutely clear that Greece cannot achieve economic progress amid the current harsh conditions of the single currency", he concluded.
On Friday, the Greek parliament supported a new reform plan by the country's government to resolve Greece's debt gridlock and secure a new bailout package.