Banks told to prepare for potential operation to buy Japanese currency

July 30 : The dollar sank against the Japanese yen on Thursday with traders alert to the possibility of intervention from Japan to prop up its stubbornly weak currency. The dollar…

Having collapsed to its weakest relative to the dollar in 40 years...

By Jessica Fleetham and Megumi Fujikawa

Coordinated actions seen as joint effort to curb yen weakness