Mario Draghi might not be too worried about disappointing investors this week. As markets look for the European Central Bank president to unveil details of his bond-purchase program on Sept. 6, Italy and Spain are showing little willingness to request aid from Europe’s bailout fund -- a pre-condition for the ECB to start buying their debt. A jump in bond yields may remind governments that they need to act first. “The market is expecting a lot from the ECB,” Gustavo Reis, an economist at Bank of America Merrill Lynch, wrote in a note to clients. “However, we look for little clarification on the bond-buying program. ... (full story)