Kim's sister hints at resuming flying trash balloons toward South Korea

The powerful sister of North Korean leader Kim Jong Un vowed Sunday to respond to what she called a fresh South Korean civilian leafleting campaign, signaling North Korea could soon resume flying trash-carrying balloons across the border.

Beginning in late May, North Korea floated numerous balloons carrying waste paper, scraps of cloth, cigarette butts and even manure toward South Korea in a series of late-night launch events, saying they were a tit-for-tat action against South Korean activists scattering political leaflets via their own balloons. No hazardous materials were found.