GLOBAL MARKETS-Stocks pause, dollar rises on Fed comments, Ukraine
August 22, 2014 at 16:53 PM EDT
* Dollar rise lifts greenback index to 2014 high * Russia convoy enters Ukraine * Yellen urges caution on rates moves (Adds closing New York prices) By Michael Connor NEW YORK, Aug 22 (Reuters) - Wall Street and other stock markets paused on Friday, halting the week's strong gains, as worsening Ukraine tensions dogged trading, while the dollar rose after Federal Reserve Chair Janet Yellen said policymakers eyeing interest rate hikes need to move cautiously. Ukraine on Frida