WEB4 days ago · TOKYO - The Nikkei stock index dropped 2 percent at one point Wednesday afternoon, weighed down by concerns over escalating tensions in the Middle East. At 2 p.m., the 225-issue Nikkei Stock Average fell 755.26 points, or 1.95 percent, from Tuesday to 37,896.71. The broader Topix index was down 32.34 points, or 1.20 percent, at …