Yen weakens to 40-year low Financial Times Japanese yen sinks to 40-year low, keeping intervention risks in focus CNBC Japan keeps intervention rhetoric unchanged despite yen's slide to 40-year low Reuters JPY/USD Yen Hits Four-Decade Low in Historic Slide That’s Rattled Japan Bloomberg.com Yen Falls to 40-Year Low Versus Dollar, Traders Alert for Potential FX Intervention WSJ