North Korea sent hundreds of balloons carrying trash and excrement across the heavily fortified border to South Korea on Wednesday, calling them "gifts of sincerity", prompting an angry response from Seoul, which said the act was base and dangerous. Photographs released by the South Korean military showed inflated balloons with plastic bags tied to them. Other images appeared to show trash strewn around collapsed balloons, with the word "excrement" written on a bag in one photograph. By...