The Japanese yen tumbled to a fresh 20-year low against the U.S. dollar on Tuesday, sliding past the 128 line, amid prospects for a divergence in monetary policy between the Bank of Japan and the U.S. Federal Reserve.At 5 p.m., the dollar fetched 128.06-08 yen compared with 126.93-127.03 yen in New York and 126.63-65 yen in Tokyo at 5 p.m. Monday.The euro was quoted at $1.0801-0803 and 138.32-36 yen against $1.0776-0786 and 136.87-97 yen in New York and $1.0790-0792 and 136.64-68 yen in Tokyo late Monday afternoon.The 225-issue Nikkei Stock Average ended up 185.38 points, or 0.69 percent, f…READ FULL ARTICLE