U.S.-China trade hopes boost stocks; dollar weak

NEW YORK (Reuters) - An index of global stock markets rallied to a 21-month high on Monday, boosted by growing hopes for a U.S.-China trade deal and the view that the U.S. Federal Reserve this week will deliver its third interest rate cut for 2019.U.S. Treasury yields rose after the European Union agreed to a three-month flexible delay of Britain's departure. Improved risk sentiment also sapped demand for the safe-haven U.S. dollar, the Japanese yen and gold.MSCI's All Country World Index ,..