Finance Minister Satsuki Katayama will announce on Monday that Tokyo and Washington took joint action in the currency market to arrest the yen¡¯s slide to 40-year lows, two Japanese government officials said.

Katayama is likely to stress the two ?countries¡¯ determination to ?combat what they consider excessive yen declines, ?said the sources familiar with the matter, on condition of anonymity due to the sensitivity of the subject.

One ?source, asked if Katayama would announce ¡°joint action,¡± said yes, adding, ¡°The operation ?is still ongoing.¡±