** FILE ** A South Korean army officer stands guard at the Inter-Korean Transit Office in Paju, South Korea, near North Korea's border city of Kaesong, on Sunday, March 15, 2009. (AP Photo/Ahn Young-joon)
AGENCE FRANCE-PRESSE/GETTY IMAGES
China's state television recorded North Korea demolishing its Yongbyon nuclear cooling tower on June 27, 2008. North Korea Wednesday began banning U.N. nuclear inspectors from its main plutonium reprocessing plant. **FILE**