Sri Lankan forces sank a Tamil rebel boat as it approached a strategic harbor in the island’s north, rebuffed an attack on an army patrol, and killed a suspected guerrilla in the east, the military said Saturday. Mounting attacks have raised fears of a return to all-out civil war on this tropical island off the southern tip of India. Late Friday, the Tamil Tiger rebels’ sea wing appeared to be about to attack a strategic port in the northern Jaffa Peninsula, a navy spokesman said. Full Story