[quote]North Korea is blocking the entry of South Korean workers into a joint industrial zone, in a move seen as further escalating tensions. Workers were being allowed to leave the Kaesong complex but not cross into it from the South, Seoul's Unification Ministry confirmed. The Kaesong zone, which is a money-maker for the North, is seen as a key barometer of inter-Korean relations. The move came as the US called North Korea's recent rhetoric unacceptable. The joint industrial park is home to more than 100 factories. More than 50,000 North Koreans work there, as well as several hundred South Korean managers. [/quote] This zone was seen by some as a safegaurd from War since N.Korea did not close it off despite cutting all communications. Now the North is blocking entry for South Koreans, it seems the North is really serious, how long are we going to give until things go downhill?