Japan’s Nikkei 225 index plunges 7% as world markets tremble over risks to the US economy The Associated PressUBS says ‘going into Japan now is like catching a falling knife,’ warns stock sell-off will continue CNBCJapan’s Nikkei 225 stock index sinks 8% in worst losses since 1987 The HillJapan Stocks Fall Sharply After Weak U.S. Jobs Data, Yen Strengthening The Wall Street JournalJapan’s Nikkei index touches bear market territory as global stock rout intensifies CNN