Eight judges in Germany have delivered a momentous decision with far-reaching implications for the euro's future. The German Constitutional Court has ruled that it is legal to ask German taxpayers to help pay for a permanent bailout fund called the European Stability Mechanism. With the ESM cleared, the European Central Bank is ready to intervene in the markets and reduce borrowing costs for Spain, Italy and other weaker eurozone member states. But is this a sustainable solution to the Euro crisis? RFI discusses the implications with economics researcher Pawel Swidlicki, of Open Europe.