"The Germans have not yet realised that southern Europe, including France, will be forced by their current misery to fight back against German hegemony sooner or later," he said, blaming much of the crisis on Germany's wage squeeze to gain export share.
Mr Lafontaine said on the parliamentary website of Germany's Left Party that Chancellor Angela Merkel will "awake from her self-righteous slumber" once the countries in trouble unite to force a change in crisis policy at Germany's expense.
His prediction appeared confirmed as French finance minister Pierre Moscovici yesterday proclaimed the end of austerity and a triumph of French policy, risking further damage to the tattered relations between Paris and Berlin.
"Austerity is finished. This is a decisive turn in the history of the EU project since the euro," he told French TV. "We're seeing the end of austerity dogma. It's a victory of the French point of view."