Germany's structural private sector and current account surpluses make it virtually impossible for its neighbours to eliminate their fiscal deficits, unless the latter are willing to live with lengthy slumps. The problem could be resolved by a eurozone move into external surpluses. I wonder how the eurozone would explain such a policy to its global partners. It might also be resolved by an expansionary monetary policy from the European Central Bank that successfully spurred private spending in the surplus countries and also raised German inflation well above the eurozone average.

You need either a big Euro devaluation or an expansionary German macroeconomic policy.