Kim Il Sung visited the Yongbyon nuclear plant in 2010 . The scientists estimates Pyongyang has 2,000 plutonium bombs . North Korea recently agreed to allow inspectors back in in exchange for food aid . It also agreed to halt nuclear and missile testing .
Hecker visited the Yongbyon nuclear plant in 2010 . The scientists estimates North Korea has as many as 8 plutonium bombs . Pyongyang recently agreed to allow inspectors back in in exchange for food aid . It also agreed to halt nuclear and missile testing .