North Korea has 80 to 90 nuclear weapons and is targeting a stockpile of 300, according to a new analysis by a South Korean state-run think tank. In a report issued Thursday, the Seoul-based Korea Institute for Defense Analysis estimated that North Korea has produced 4,506 pounds of weapons-grade highly enriched uranium at its Yongbyon nuclear facility. It also possesses a plutonium reserve of between 150 and 172 pounds. The combined amount of fissile material… – UPI Photo: KCNA