The currencies are so tightly coupled that a joint intervention could double the impact. Read more at straitstimes.com. Read more at straitstimes.com.

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

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

Coordinated actions seen as joint effort to curb yen weakness