In an interview with the Wall Street Journal Deutschland, Hans Werner Sinn, head of the Ifo Institute in Germany, says Greece's bondholders are overly exaggerating the effects on the eurozone of an exit by Greece. He sees it in the best interests of Greece to improve its competitiveness and return to growth by going back to the drachma. Just to get to the level of Turkey Greece would need to reduce prices by 31%, which is impossible to do within the eurozone without risking a complete breakdown in civil order. The best way to use the 130 billion euro second bailout package is to use it to recapitalize its banking system, says Sinn. Sinn says Portugal's faces the risk of a debt crisis following the crisis in Greece.