GLOBAL MARKETS-Dollar flatlines ahead of Yellen, Draghi at Jackson Hole
August 22, 2014 at 04:39 AM EDT
* Dollar, Euro shares flat after strongest week since March, Feb * Investors await Yellen's speech in Jackson Hole * Nikkei snaps 9-session winning streak * Upbeat U.S. data helps lift S&P 500 to record high close By Marc Jones LONDON, Aug 22 (Reuters) - The dollar was steady on Friday after its strongest weekly run since March and world stocks were near all-time highs as markets waited for steers from the Federal Reserve and ECB on diverging policy plans. European share