The Japanese yen recorded its strongest one-day gain against the U.S. dollar in nearly two years after suspected intervention by Japanese authorities. The move adds to a long history of currency market interventions, from the Plaza Accord to recent efforts to curb excessive yen volatility.

NEW YORK, July 30 : The Japanese yen surged on Thursday, in a move analysts said bore the hallmarks of official intervention by Tokyo to prop up a currency that has slumped to…

NEW YORK, July 30 : The yen rose sharply against the dollar on Thursday, in a move analysts said bore the hallmarks of official intervention by Japanese authorities to prop up the…

By Jessica Fleetham and Megumi Fujikawa

The Japanese yen recorded its strongest one-day gain against the U.S. dollar in nearly two years after suspected intervention by Japanese authorities. The move adds to a long…