Dislikedyou sure it's joint? my info is that they're leaving boj to sort it but with approval...Ignored
TOKYO, March 18 (Reuters) - Japan agreed with central banks of the United States, Britain and Canada as well as the European Central Bank to jointly intervene in the currency market, Japanese Finance Minister Yoshihiko Noda said on Friday.
Japanese authorities will buy dollar/yen in the market from 9 a.m. (0000 GMT). Other central banks will act when their markets open, Noda said."
However, I myself will treat it as a gossip until I see the evidence.