Powell uncertainy unsettles Wall Street, Dow Jones dives 251 points

NEW YORK, New York - U.S. stocks tumbled again on Thursday in line with a global trend as tensions in the Middle East continued to flare. Treaury yields continued higher. Now at 16-year highs, the 10-year yield is fast approaching the 5.00 percent mark. The bond maket was dented following a speech by Federal Reserve Chair Jerome Powell who, while conceding inflation was trending down, said the road ahead remains very m