After pledging last week to "do whatever it takes to preserve the euro," the European Central Bank left its record low .75 percent interest rate unchanged on Thursday. The news comes as a disappointment to some investors who hoped bank president Mario Draghi would stick to his word, though markets eagerly await more news from Mr. Draghi at a press conference this afternoon. The U.S. Federal Reserve on Wednesday signaled it would take steps to boost the economy if necessary, though Chairman Ben Bernanke stopped short of outlining stimulus measures.
