North Korea has announced its intention to stop sending air balloons with trash across the border to its southern neighbor. However, Pyongyang has promised to resume this practice if leaflets from South Korea are sent by air again, according to Reuters. It is noted that North Korea has already managed to send 15 tons of trash in this way using 3500 air balloons. According to North Korean Vice Minister of Defense Kim Kang Il, the South has gained enough experience of how unpleasant and how much effort it takes to collect trash, as mentioned in a statement from the North Korean state news agency…