Japan on Friday left markets guessing on whether it had intervened to shore up the yen against the U.S. dollar, as senior officials neither confirmed nor denied another foray to reduce excessive volatility.The officials remained silent after the dollar tumbled more than 4 yen from 161 yen over a short span of time in New York overnight, soon after data showed inflation in the United States had continued to slow, strengthening the market view that the Federal Reserve will cut interest rates in September.Finance Minister Shunichi Suzuki, in a similar vein, did not confirm a media report that …READ FULL ARTICLE