The euro and stocks rallied on Thursday after European Central Bank President Mario Draghi pledged to do whatever is necessary to protect the euro zone from collapse. The comments from Draghi drove Spanish 10-year bond yields below the 7 percent mark widely viewed as unsustainable for the government to fund itself. Earlier yields had brushed 7.5 percent. Draghi's pledge appeared to be a message to the bond market, a key battleground of the euro-zone crisis as markets have forced Spanish and Italian borrowing costs ever higher. In explaining his comments, his boldest to date, Draghi said the high borrowing costs that ... (full story)