SYDNEY (Reuters) - Asian shares pared losses on Tuesday as hopes for a de-escalation in the Sino-U.S. tariff war rose on reports that China’s top trade negotiator was preparing to visit the United States ahead of a meeting between the two countries’ leaders. FILE PHOTO: A U.S. Dollar note is seen in this June 22, 2017 illustration photo. REUTERS/Thomas White/Illustration/File Photo Spreadbetters pointed to a positive start for Europe and U.S.