REFILE-GLOBAL-MARKETS-Oil at 11-year low but Wall St rebounds from week-ago declines 21.12.2015 19:43 Reuters NEW YORK, Dec 21 (Reuters) - A persisting world oil glut dragged Brent crude prices down on Monday to their weakest in more than 11 years and U.S. crude to six-year lows, but Wall Street gained broadly after big declines a week earlier.
