Washington's decision to join Japan in supporting the battered yen has prompted questions over what motivated the rare coordinated intervention.

July 31 : The U.S. Treasury intervened to support the yen on Friday through outright purchases, the Financial Times reported, joining Japan in its efforts to boost the currency…

The reported action would be the US Treasury’s first direct support for the yen since 2011. Read more at straitstimes.com. Read more at straitstimes.com.

Tokyo and Washington saw eye to eye on halting yen weakness