Some action from North Korea after weeks of harsh words: Pyongyang has blocked nearly 500 South Korean workers from entering a jointly run factory park just over the heavily armed border in the North today. As Reuters reports, the move to block South Koreans from going to their jobs at the Kaesong Industrial Park, dubbed the "last remaining symbol of detente" between the rivals by the AP, puts a vital source of revenue for the North at risk. As such, some South Korean experts believe the move could be a short-lived one.
And signs suggest the factories haven't been shuttered: Though the North has given the OK for the 861 South Koreans working in the zone to travel home, as of today fewer than 40 had done so, reports the New York Times. However, Reuters notes that the South transports all supplies to the complex, so food stocks could begin to dwindle. Entry to the park, which is home to 123 factories, was previously blocked three times in 2009, once for a three-day period. The move comes amid increasing hostility from Pyongyang, include yesterday's threat to restart its sole nuclear reactor. (Read more North Korea stories.)