According to Yonhap news agency, on Tuesday, amid high tensions following North Korea's balloon attacks, South Korea's military fired warning shots as North Korean soldiers briefly crossed the border.

On the heavily guarded Korean border, something significant is taking place after days of high tensions that saw North Korea launch hundreds of garbage and excrement-filled balloons into the south.

According to South Korea's Yonhap news agency, there are multiple reports of dozens of Nor...