North Korea may have doubled uranium enrichment capacity at its main Yongbyon nuclear complex, a US think-tank that tracks North Korea's nuclear weapons programme said ThursdayThe Institute for Science and International Security (ISIS) said the images showed the building housing the gas centrifuge plant at Yongbyon had been expanded to twice its original size over the past four months.
When North Korea revealed the existence of the facility to visiting scientists in 2010 it contained 2,000 centrifuges for enriching uranium.
Assuming that the recent expansion would allow the doubling of that number to 4,000 centrifuges, the facility could produce as much as 68 kilograms of weapons-grade uranium a year -- enough for three nuclear bombs with a little left over, ISIS said in a report.