News Analysis - Worries Mount on E.C.B.’s Ability to Stem a Panic - NYTimes.com

News Analysis - Worries Mount on E.C.B.’s Ability to Stem a Panic - NYTimes.com: "But the continued erosion of the euro against other major currencies and the dark mood reflected in nervous financial markets highlight perhaps the most crucial question facing Europe today: Who ultimately stands behind the banks if the loans they and the E.C.B. have extended directly and indirectly to Greece, Portugal, Spain and a few other sovereign debtors need to be written down?"