Yen Strengthens Past 157 as Japan’s FX Chief Repeats Warning

Japan's currency diplomat is doing the talking, not the Ministry of Finance's actual intervention machinery, and the market is responding by nudging the yen stronger rather than testing the warning. That asymmetry matters: verbal jawboning only carries weight while traders believe the threat of real action is live, and the modest size of the move suggests positioning is cautious rather than convinced. Whether Mimura's repeated warnings keep holding the pair below the line without an actual yen-buying operation is the open question.