The prolonged weakness of the yen, which recently hit a 40-year low against the dollar, has been a source of frustration in import-dependent Japan, where it has worsened inflation.

New York/Washington, July 31 (Jiji Press)--The dollar plunged below 157.50 yen for the first time in about two and a half months in New York trading on Friday as the Japanese and…

Coordination between Japan and the United States now appears to be the tightest in decades, fuelling one of the most notable rebounds since the yen began its years-long slide.