North Korea has again sent balloons believed to be carrying rubbish across the heavily guarded border into South Korea, the Yonhap news agency reported on Wednesday. Yonhap cited the South Korean Joint Chiefs of Staff (JCS) as saying that a number of balloons floated across the border around Seoul and the surrounding province. The JCS advised people not to touch the objects but to report them to authorities, Yonhap reported. Since the end of May, North Korea has sent more than 3,000 trash-filled balloons into the South, including some 500 on Sunday, the news agency reported. North Korea’s ball…