N Korea has built two-storey uranium enrichment facility, says watchdog
North Korea has built a new two-storey uranium enrichment facility, the head of the world's nuclear watchdog said this week, calling it a cause for "serious concern".The new building is part of the main Yongbyon nuclear complex, and reportedly capable of housing up to 28 centrifuge cascades used to enrich uranium, BBC reported. In a report published late last month, the International Atomic Energy Agency (IAEA) said Pyongyang had also begun operating an expanded annex at
