North Korea has sent hundreds of balloons with faeces and bags of rubbish to South Korea as residents are warned to take cover. Around 200 hot-air balloons have crossed the border since last Tuesday, according to the South’s Joint Chiefs of Staff (JCS). The North warned that more bags are due to land. Locals posted pictures online of the bags containing plastic bottles, used batteries, old shoes and excrement. In a statement, the JCS said: “These acts by North Korea clearly violate international law and seriously threaten our people’s safety. “We sternly warn North Korea to immediately desist …