Japan former high foreign money
diplomat Naoyuki Shinohara spoke with Reuters. Highlights:

Japan doubtless will not search to reverse the yen’s downtrend with exchange-rate intervention as latest falls mirror financial fundamentals, former high foreign money diplomat Naoyuki Shinohara instructed Reuters.

There isn’t a set rule or shared settlement amongst G7 superior nations on what sort of foreign money strikes are outlined as “extra volatility” that justify intervention,

• “Often, while you discuss extra volatility you may have
  in thoughts a timeframe of a number of days or even weeks,” slightly than
  a number of months
• “Japanese authorities are effectively conscious that they cannot reverse
  the market’s tide when the yen’s decline is pushed by financial
  fundamentals,”
• “When you may have regular yen falls over a protracted interval,
  that is often a development pushed by fundamentals,”
• “If the latest weak yen is certainly a supply of concern for
  Japan, one of the simplest ways to cope with it will be for the BOJ to
  normalise its ultra-loose financial coverage,”
• “The finance ministry should give attention to responding to abrupt
  yen strikes which can be out of line with the broad development,”