Japan top FX diplomat urges markets to heed 'very clear' warning on yen

By Makiko Yamazaki, Takaya Yamaguchi and Leika KiharaJapan's top currency diplomat Atsushi Mimura said on Monday markets should take at face value the "very clear" message Tokyo and Washington delivered last week on the yen, signalling his resolve to act against excessive falls in the currency.US P…