South Korean cargo trucks and vehicles head to North Korea's Kaesong Industrial Complex at a border checkpoint, just south of the Demilitarized zone dividing the two Koreas, in Paju on March 18, 2015. A group of South Korean businessmen visited their Kaesong joint industrial zone to deliver their position on North Korea's unilateral decision to raise wages for its workers as South Korean government rejected the decision. AFP PHOTO / JUNG YEON-JE        (Photo credit should read JUNG YEON-JE/AFP/Getty Images)