The yen has tumbled past a 40-year low against the U.S. dollar, prompting the Japanese government to vow ¡°appropriate action at any time.¡±
The currency has been falling for years and broke through ?162 against the dollar on Tuesday, the weakest since 1986, compared to a high of around ?75 in 2011.
Here¡¯s a look at the causes and consequences and how Japan might halt the slide, which mirrors drops in other Asian currencies in the wake of the Middle East war.
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