South Koreans are beginning to leave North Korea and the factory park where they work at one by one.  It has been four days since Pyongyang closed the border to people and goods.  21 South Koreans returned from the Kaesong industrial park Saturday morning, and about 100 of the close to 600 still there were expected to return home by day's end, the Unification Ministry in Seoul said.  There are reportedly fully armed guards in the area.  

The industrial park is the last remnant of North-South cooperation, so Pyongyang's blocking of traffic there is a big move.  

The communist dictatorship sent mid-range missile launchers to its east coast and warned foreign embassies Friday it cannot guarantee the safety of diplomats after April 10.North Korea said it would restart a plutonium reactor earlier in the week.  It was closed in 2007 and use it to make fuel for nuclear bombs.

The United Kingdom foreign office also confirmed Friday that North Korea has asked a number of foreign embassies in Pyongyang to consider moving staff out as they could not assure their safety if conflict arose.

North Korea has railed for weeks against joint U.S. and South Korean military exercises taking place in South Korea.  They also have expressed anger over stricter sanctions for a nuclear test in February.

North Korea said last week it had entered a "state of war" with South Korea, however Seoul officials say they have seen no preparations for a full-scale attack.

North Korea has not forced South Korean workers to leave Kaesong, but companies from South Korea working in North Korea are running out of raw materials because goods are being blocked at the border.  Companies are saying they will start t be in big trouble financially if supplies are not sent soon.  

North Korea is threatening to "wither the Kaesong industrial complex to death" rather than taking South Korean managers hostage.  This would send negative shock waves all across international boarders.