In this Sept. 21, 2012 photo, a North Korean worker handles wires at a South Korean-run factory inside the Kaesong industrial complex in Kaesong, North Korea. On Wednesday, April 3, 2013, North Korea ... more 
In this Sept. 21, 2012 photo, a North Korean worker handles wires at a South Korean-run 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. Pyongyang had threatened in recent days to close the border in anger over South Korea's support of U.N. sanctions punishing North Korea for conducting a nuclear test in February. (AP Photo/Jean H. Lee) less 
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Associated Press | Photo By Jean H. Lee
Wed, Apr 3, 2013 7:32 AM EDT