North Korea on Thursday disclosed a new facility dedicated to producing fuel for nuclear bombs, with leader Kim Jong Un announcing plans to bolster the country's nuclear forces "at an exponential rate." The unveiling comes amid heightened tensions with the United States and South Korea.
South Korea's Assessment
South Korea's Joint Chiefs of Staff assessed the site as a uranium enrichment plant and stated that it is closely coordinating with the United States to monitor North Korean nuclear activities. The South's military did not immediately release further details regarding the facility's location or operational status.
State Media Coverage
The North's official Korean Central News Agency (KCNA) reported that the facility uses "more sophisticated technology" but provided no further specifics. It remains unclear where the plant is located or when it began operations. State media photos showed what appeared to be a large hall housing centrifuges, which are essential for enriching weapons-grade uranium.
Kim Jong Un's Visit
KCNA stated that Kim Jong Un visited the nuclear facility on Wednesday to learn about its operations and long-term production plans. Kim was quoted as saying that the urgency for strengthening the country's nuclear war deterrent, both in quality and quantity, has grown due to confrontations with "the most ferocious enemies," an apparent reference to the United States and South Korea. He also cited unspecified threats and crises as reasons to boost North Korea's nuclear capability.
Claims on Production Capacity
Kim claimed that North Korea's weapons-grade nuclear materials production capacity has more than doubled compared to five years ago, according to KCNA. This claim could not be independently verified. After a meeting at the facility, Kim said that he and other top officials "confirmed the order of priority for implementing the ambitious future plan designed to beef up our state's nuclear forces at an exponential rate."
Photos and Graphics
KCNA photos depicted Kim walking through narrow aisles lined with dense rows of silver tubes and pipes, in what appeared to be a centrifuge hall. Another image showed him speaking with senior officials in a meeting room, where a blurred graphic depicting a cone-shaped object was spread across a table. It was not immediately clear whether the graphic showed a warhead design.
Timeline of Disclosures
The revelation of this facility comes less than two years after North Korea unveiled another covert uranium-enrichment plant in September 2024, marking the first public disclosure of such a facility since showing one at the main Yongbyon nuclear complex to visiting American scholars in 2010. During his visit to that facility in 2024, Kim called for an increase in the number of centrifuges to "exponentially" expand the country's nuclear arsenal and urged the development of more advanced centrifuge systems.
Nuclear Expansion
North Korea has not conducted a nuclear test since 2017, but in recent years it has expanded its arsenal of nuclear-capable missiles that can reach US allies in Asia and the American mainland. Kim has also pushed to increase the country's stockpile of nuclear weapons. A senior South Korean official told lawmakers in 2018 that North Korea was estimated to have manufactured between 20 and 60 nuclear weapons, but some experts now put the size of the North's arsenal at more than 100 warheads. Estimates of how many additional weapons the country can produce each year vary from about six to as many as 18.
Enrichment Facilities
Last September, South Korean Unification Minister Chung Dong-young said that North Korea was operating a total of four uranium enrichment facilities including the Yongbyon complex, and that they were running every day. Nuclear weapons can be built using either highly enriched uranium or plutonium, and North Korea has facilities to produce both at Yongbyon.
Diplomatic Context
North Korea has focused on enlarging and modernizing its nuclear arsenal since Kim's high-stakes diplomacy with US President Donald Trump collapsed in 2019. Kim has since rebuffed US and South Korean offers to restart diplomacy. In April, International Atomic Energy Agency Director General Rafael Grossi told reporters that his agency had confirmed "a rapid increase" in activities at nuclear facilities in North Korea.
