North Korea may soon be able to produce up to 230 kilograms of weapons-grade uranium per year for its nuclear arsenal, according to a new analysis of images from two key enrichment facilities, representing an over 50% increase from a previous estimate of DPRK capabilities.

In a report published on Thursday, the Institute for Science and International Security (ISIS) estimated that North Korea can now produce around 180 kilograms of weapons-grade uranium annually at its main facilities at Kangson and Yongbyon, an amount that could increase to 215-230 kilograms per year once a new annex at Kangson is fully operational.