Key Takeaways:
North Korea's uranium enrichment capacity is set to expand by 75% once a new Yongbyon facility reaches full production, as Kim Jong Un pushes ahead with an accelerated nuclear buildup.
North Korea's uranium enrichment capacity could expand by 75% once a new Yongbyon facility reaches full production, according to a Vertic analysis, as Kim Jong Un accelerates his nuclear buildup in defiance of international pressure.
"North Korea probably has all the material they'd need for a medium-sized nuclear arsenal already. And now it looks like they're running up the numbers," said Grant Christopher, co-lead of the verification and monitoring program at Vertic, the London-based nonprofit that conducted the analysis. "We don't see any evidence they're going to stop any time soon."
The new facility houses more than 9,000 centrifuges capable of producing roughly 160 kilograms of highly enriched uranium annually, Vertic estimated. North Korea's total enrichment capacity previously stood at about 215 kilograms per year. The country's total stockpile of highly enriched uranium is estimated at 2,100 kilograms, or roughly one-tenth the size of military reserves held by the United Kingdom or France, Christopher said.
The expansion means Kim is unlikely to pursue a deal with the U.S. or other powers offering sanctions relief in exchange for nuclear concessions. North Korea currently has an estimated 60 nuclear warheads, up from 50 in 2025, plus enough fissile material to produce at least 90 more, according to the Stockholm International Peace Research Institute.
The facility was built in roughly 18 months, with satellite imagery showing construction started in late 2024, said Jaewoo Shin, a senior analyst at Open Nuclear Network and co-author of the Vertic report. "It is significant that this facility was placed in the middle of Yongbyon, and not somewhere deep in the mountains that the external community is not looking at," Shin said. "It was there to be found."
Kim inspected the new enrichment site last week, with state media images showing him walking past rows of centrifuges. He praised scientists for more than doubling the country's "weapons-grade nuclear material production" capacity and promised to carry out "larger plans." The nuclear potential North Korea now has "is inconceivable," Kim said.
Historical Precedent and Diplomatic Context
The expansion comes seven years after Kim offered to dismantle Yongbyon in exchange for sanctions relief during nuclear talks with then-President Donald Trump in Hanoi. Trump wanted a broader deal that included undeclared nuclear sites, and negotiations collapsed. Trump, who held three meetings with Kim during his first term, has signaled interest in reviving diplomacy, though the latest expansion suggests Kim sees little reason to negotiate.
Chinese President Xi Jinping visited Pyongyang this week for his first summit with Kim in nearly seven years and did not mention denuclearization publicly, a shift from Beijing's previous stance of pressing North Korea to halt its weapons program.
Market Implications
The escalation adds to geopolitical risk premiums across Asian markets. South Korean equities and the won face potential pressure, while safe-haven assets including gold and the U.S. dollar could see increased demand. Defense and aerospace stocks may benefit from the heightened threat perception. The last time North Korea conducted a major nuclear test in September 2017, the Kospi fell 2.3% over the following week while gold rose 1.8%.
Rafael Grossi, the United Nations' atomic chief, described the overall uptick in activity at Yongbyon — including the 5-megawatt reactor, a reprocessing unit and a new light-water reactor — as a "very serious increase" in North Korea's capabilities.
This article is for informational purposes only and does not constitute investment advice.
