North Korea has expanded its nuclear arsenal by building a new two‑storey uranium enrichment facility at the Yongbyon complex, a move described by the International Atomic Energy Agency as a cause for serious concern.
The new structure can house up to 28 centrifuge cascades, signalling a considerable increase in enrichment capacity. Satellite images released by the IAEA in late last month also reveal an expanded annex at a separate enrichment site in Kangson near Pyongyang.
The agency has no on‑the‑ground inspectors in North Korea since 2009 and relies on remote sensing to monitor the buildup, underscoring the nation’s highly secretive approach to nuclear development.
IAEA director Rafael Grossi highlighted that the DPRK’s continued program violates UN Security Council resolutions. He reiterated the agency’s concern earlier this week, noting that the new facility was first mentioned in a June report and confirmed by Kim Jong Un’s visit to a newly inaugurated complex.
Kim praised the facility’s expanded production capacity during a speech on 3 June, asserting that it would enable the country to pursue larger strategic plans. A 2022 think‑tank estimate suggests the DPRK spends an annual budget of around 640 million dollars on nuclear projects.
University of Oxford lecturer Edward Howell warns that many DPRK nuclear sites remain unknown and concealed, complicating international efforts to target them. He cites Kangson as an example of a hidden facility that has recently begun operations.
The expansion comes amid a period of accelerated missile testing under Kim Jong Un, with the country conducting numerous intercontinental ballistic missile tests since 2017 and six nuclear weapon tests to date, the last in September 2017.
South Korean president Lee Jae Myung has recently offered to discuss plans to formally end the Korean war while addressing the DPRK’s nuclear ambitions. An official response from North Korea to this proposal has not yet been received.
