A man takes a photo of an electronic stock indicator of a securities firm in Tokyo, Tuesday, August 25, 2015. On Tuesday, Japan's main share index, the Nikkei 225, sank 4 percent to 17,806.70 in a session that saw the benchmark swing between positive and negative territory. It fell 4.6 percent on Monday. (Photo by Shizuo Kambayashi/AP Photo)
