TOKYO - While Tokyo stocks may have more room for gains, their momentum could be lost if the Japanese economy heads for contraction after the Summer Olympics and the U.S.-China trade war re-escalates after the U.S. presidential election, market experts say.The benchmark Nikkei index has been trading at its highest levels in about 14 months, and economic fundamentals are expected to remain favorable for the coming months as corporate earnings are showing improvement, Washington and Beijing have reached a trade-war cease-fire and key U.S. stock indexes continue their record-setting rallies.Th…READ FULL ARTICLE