Dollar, global stocks trade mostly flat on trade talk optimism

NEW YORK (Reuters) - The dollar and a gauge of global stock markets traded little changed on Tuesday as record highs on Wall Street were offset by caution as traders scrutinized the latest developments in the prolonged U.S.-China trade talks.Oil prices traded near flat after China's Commerce Ministry said Chinese and U.S. trade negotiators held a phone call as the two sides try to hammer out a "Phase one" deal in a trade war that has dragged on for 16 months.U.S. and euro zone bond yields slid..