Pyongyang's reactor nearing
The reactor provided plutonium for Pyongyang's nuclear weapons programme.Steam has been seen rising from North Korea's Yongbyon nuclear facility, suggesting that the reactor has been restarted, a US institute says. Pyongyang vowed to restart facilities at its main Yongbyon nuclear complex in April, amid high regional tensions.The reactor can produce plutonium, which North Korea could use to make nuclear weapons.Analysts believe North Korea already possesses between four and 10 nuclear weapons, based on plutonium produced at the Yongbyon reactor prior to mid-2007, when the facility was closed down.'Leverage' The report, which was published on the 38 North website on Wednesday, was written by the US-Korea Institute at Johns Hopkins University. The institute uses satellite imagery to monitor developments in North Korea. The reactor uses steam turbines to generate electricity, and the steam seen in satellite imagery from 31 August indicated that the electrical system was about to come online, the report said.