A 8.6-magnitude earthquake and powerful aftershocks struck off Indonesia on Wednesday, sending people scurrying from shaking buildings in several countries and raising fears of a disastrous tsunami. Tsunami alerts were issued across the entire Indian Ocean, although they were later lifted. The U.S. Geological Survey said that the initial quake happened about 14 miles beneath the ocean floor and 270 miles from Banda Aceh, the provincial capital of Aceh, at 2:38 p.m. local time (4:38 a.m. ET). Reuters...