** FILE* ** In this Sept. 21, 2012, photo, North Korean workers assemble Western-style suits at the South Korean-run ShinWon Corp. garment factory inside the Kaesong industrial complex in Kaesong, North Korea. On Wednesday, April 3, 2013, North Korea refused entry to South Koreans trying to cross the Demilitarized Zone to get to their jobs managing factories in the North Korean city of Kaesong. (AP Photo/Jean H. Lee)

Photo by: Jean H. Lee

** FILE* ** In this Sept. 21, 2012, photo, North Korean workers assemble Western-style suits at the South Korean-run ShinWon Corp. garment factory inside the Kaesong industrial complex in Kaesong, North Korea. On Wednesday, April 3, 2013, North Korea refused entry to South Koreans trying to cross the Demilitarized Zone to get to their jobs managing factories in the North Korean city of Kaesong. (AP Photo/Jean H. Lee)