Stocks slip on trade worries as record high stays elusive

LONDON (Reuters) - World shares slipped on Friday as a leading index strained for a record high, with nerves gnawing away from Asia to Europe over how, or when, the U.S. and China can agree a truce in their damaging trade war. The MSCI All Country world index , which tracks shares in 49 countries, fell 0.2% to 548.48 points, short of a record 550.63 scaled in January 2018 before the tensions over trade between Washington and Beijing broke out.European shares clawed back ground after opening..