The launches are escalating animosities, with South Korea suspending a tension-easing deal with North Korea and preparing to resume frontline military activities. North Korea had halted its flights of rubbish-carrying balloons but threatened to resume them if South Korean activists sent leaflets again. The South Korean civilian group, led by North Korean defector Park Sang-hak, said it floated 10 balloons tied to 200,000 anti-Pyongyang leaflets, USB sticks with K-pop songs and South Korean dramas and one-dollar U.S. bills from a border town on Thursday. In reaction to the North’s balloon campaign, South Korea fully suspended a 2018 tension-easing agreement with North Korea. North Korea has previously responded to such flyovers of advanced U.S. aircraft with provocative missile tests.