SEOUL, South Korea — Mammoth South Korean loudspeakers blaring BTS music. Large North Korean balloons carrying manure, cigarette butts and waste batteries. Small South Korean civilian leaflets slamming North Korean leader Kim Jong Un.

Day after day, the Cold War-style yet bizarre campaigns continue at the heavily fortified border of the rivals who haven’t had any serious talks for years. “At this point, both Koreas are trying to pressure and deter each other with politically symbolic actions,” Leif-Eric Easley, a professor at Ewha University in Seoul, said. “The problem is that neither side wants to be seen as backing down, and tensions at the border could escalate to unintended conflict.

” Here is a look at the latest flare-up of tensions between the two Koreas. READ MORE: North Korea flies trash-carrying balloons to South Korea in another retaliation against leafletting Seoul says will resume loudspeaker propaganda against North Korea Is the battle of the loudspeakers restarting? On Sunday, South Korea redeployed its gigantic loudspeakers along the border for the first time in six years and resumed anti-Pyongyang propaganda broadcasts. The broadcasts reportedly included K-pop sensation BTS’s mega-hits like “Butter” and “Dynamite,” weather forecasts and news on Samsung, the biggest South Korean company, as well as outside criticism of the North’s missile program and its crackdown on foreign video.

South Korean officials say the ear-piercing broadcasts .