World stocks head towards record high on Yellen, U.S. outlook

World stocks rose to a whisker off all-time highs on Wednesday and the dollar rose for the 11th straight day following Federal Reserve Chair Janet Yellen's flagging of a possible interest rate rise next month. The dollar notched up its longest winning streak in almost five years after Yellen said on Tuesday the Fed would probably need to raise rates at an upcoming meeting and that delaying could leave the central bank's policymaking committee behind the curve. Propelled by record highs on Wall S