Meanwhile , Korean forces cease fire after North opens up on balloons with anti - aircraft guns . The balloons carried leaflets critical of the North , South Korean Defense Ministry says . A North Korean official said last week that the country was ready to resume negotiations over the country 's nuclear efforts with Russia , the United States , China , Japan and South Korea . The exchange occurred amid widespread speculation over the fate of the North 's missing troops . North Korea has also made some diplomatic overtures in recent days .
Meanwhile , Korean forces cease fire after North opens up on balloons with anti - aircraft guns . The balloons carried leaflets critical of the North , South Korean Defense Ministry says . The exchange occurred amid widespread speculation over the fate of the North 's missing troops . North Korea has also made some diplomatic overtures in recent days .