As North Korea has ramped up hostility toward South Korea with a series of provocations, there are increasing calls to resume operating loudspeakers along the inter-Korean border as a countermeasure.
On Sept. 19, 2018, the defense ministers of South and North Korea signed a Comprehensive Military Agreement (CMA), aimed at halting all hostile activities between them. This agreement included the prohibition of military drills in border areas and the establishment of no-fly zones near the boundary.