The Japanese yen hit a fresh 15-year high against the US dollar on Thursday despite veiled warnings from Naoto Kan, Japan's prime minister, of possible currency market intervention.
The dollar's fall to Y82.25 during Tokyo trading will place more pressure on Mr Kan’s government to shore up the greenback, just three weeks after Japan's dramatic sale of an estimated Y2,100bn ($25.5bn).
But any further round of intervention by the world's third largest economy could fuel fears of international competitive devaluations or even a currency war that could threaten global growth.
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