Global stocks fall from 20-month highs on trade talk concerns

NEW YORK (Reuters) - World stock markets slid from 20-month highs on Thursday as uncertainty about a potential U.S.-China trade deal offset strong results from Apple and Facebook, while the dollar eased as investors mulled whether the Federal Reserve will cut rates further.Chinese officials have doubts about reaching a comprehensive long-term trade deal with Washington and U.S. President Donald Trump, Bloomberg reported, citing unidentified sources.The trade spat between the world's largest..