Japan’s currency falls to its weakest since 1990 against the dollar as the yen keeps yelping ABC NewsYen Traders See Uphill Battle for Japan to Halt Currency’s Slide BloombergJapan Govt to Respond Firmly to Excessive FX Movements, Top Currency Official Says The Wall Street JournalJapanese yen strengthens sharply after hitting 160 against dollar for the first time since 1990 CNBC