In April 2013, the North took the extreme step of unilaterally barring South Korean workers from entering the Gaesong
Industrial Complex, a symbol of inter-Korean exchanges and cooperation, and withdrawing all of its own workers.
See Gaeseong Gongeop Jigu uihwa gwanri gyujeong [Regulations on Management of Foreign Currency for Gaesong
Industrial Zone], Feb.
Industrial Complex is an industrial zone inside North Korea.
The missile test came one day after Pyongyang expelled 11 South Korean officials from the liaison office at the inter-Korean industrial complex in Gaesong
, just north of the heavily fortified Demilitarized Zone (DMZ) dividing the two Koreas.
North Korea's embarrassment is understandable if the accident works to deter inter-Korean economic cooperation projects in Gaesong
Industrial Complex or even affects Washington's decision to drop it from its list of terrorism sponsors.