.AS ANY INDIVIDUAL that has feuded with a neighbour knows, pouring rubbish over the bush is actually a significant escalation. So picture South Korea's anger at the North, which has sent some 2,000 balloons, each lugging around 10kg of scree, around the border since May 28th. One of the most latest bouquet, numbering around 350, began showing up on June 24th. According to the South, the bags contained newspaper, aged clothing and bloodsuckers that perhaps originated in human faeces. Why is actually North Korea delivering its rubbish south?