SHANGHAI (Reuters) - Asian shares fell on Tuesday as relief over a pause in escalation of the trade war between the U.S. and China gave way to doubt over the two countries’ ability to resolve differences. A man sits in front of an electronic board showing stock information at a brokerage house in Hangzhou, Zhejiang province, China December 3, 2018. REUTERS/Stringer Adding to market worries, an inversion at the short end of the U.S. yield curve raised the specter of a possible U.S. recession.