ARTICLE AD BOX

The two Koreas have engaged in psychological warfare since the 1960s, with weapons like huge billboard screens, loudspeakers installed along the border, and airdropping propaganda leaflets.
(Image credit: Anthony Wallace)

The two Koreas have engaged in psychological warfare since the 1960s, with weapons like huge billboard screens, loudspeakers installed along the border, and airdropping propaganda leaflets.
(Image credit: Anthony Wallace)