Japan intervened in the foreign exchange market on July 30, buying a record 7.98 trillion yen ($50.4 billion) to stem the Japanese currency's slide against the U.S. dollar, according to data released Monday by the Finance Ministry.The July 30 intervention was part of a series of yen-buying, dollar-selling operations totaling 15.4 trillion yen on July 30, 31 and Aug. 3, data on foreign exchange intervention operations for the July-September quarter showed.On July 31, Japan and the United States jointly intervened to buy yen for the first time in 28 years, with Japan spending the equivalent o…READ FULL ARTICLE