South Korea resumes broadcasting propaganda towards North Korea

South Korea unleashed a high-decibel propaganda barrage across its border with North Korea on Friday in retaliation for its nuclear test, a step that has angered the isolated North in the past. Seoul decided to restart the broadcasts against Pyongyang after Pyongyang announced this week that it had successfully tested a hydrogen nuclear device. North Korea boosted troop deployments in front-line units on Friday, and South Korea raised its military readiness to the highest level at locations near the loudspeakers. The South vowed to retaliate against any attack on the equipment, raised its cyber security alert and cancelled tours of the Demilitarized Zone on the border. The sound from the speakers can carry for 10 km into North Korea during the day and more than twice that at night.