Economy minister Yosano says that it is natural for the government to act if the yen becomes more volatile. The government must respond to the high yen, he says. Don’t rely excessively on the BOJ to end deflation, he says.

USD/JPY has slipped back to the 82.70s from a run at 83.00 earlier. An 83.00 digital option expires at 15:00 GMT…