At the end of the Democratic National Convention this summer, thousands of red, white and blue balloons cascaded onto the ...

North Korean defectors have been known to send balloons to the North side containing anti-regime leaflets, and have also reportedly sent USB memory sticks of Korean pop music and videos ...

In July, South Korea started boosting broadcasts of K-pop songs and propaganda messages across the two countries' heavily armed border into North Korea in response to the balloon drops.