Seoul
South Korea took a major step forward on Friday in its long-running quest to secure rights to enrich uranium and reprocess spent nuclear fuel for peaceful purposes, with the United States affirming its support in the countries’ joint summit document. The joint fact sheet, released earlier in the day, outlines the agreements reached in the two summits between President Lee Jae Myung and US President Donald Trump. It covers the allies’ commitments on a range of key trade and security issues.
Consistent with the bilateral 123 agreement and subject to US legal requirements, the United States supports the process that will lead to the ROK’s civil uranium enrichment and spent fuel reprocessing for peaceful uses, the document showed. ROK stands for South Korea’s official name, the Republic of Korea.
Under the 123 agreement on peaceful nuclear energy cooperation, South Korea has very limited authority to reprocess spent nuclear fuel or enrich uranium for civilian purposes, as such activities require US consent through bilateral consultations under the relevant treaties, laws and regulations governing both countries.
The agreement only allows South Korea to enrich uranium up to less than 20 per cent based on US consent, with US concerns over nuclear proliferation known as the primary reason.
The nuclear energy pact, forged in 1974, was revised once in 2015 for a 20-year term, to accommodate Seoul’s request for the rights to reprocess spent fuel and enrich uranium, but it has been seen as effectively barring Seoul from producing its own civilian nuclear fuel.
South Korea, a global nuclear energy powerhouse, has long sought to expand its rights as a way to address growing nuclear waste stockpiles. The country currently operates 26 commercial nuclear reactors. The storage for spent fuel rods from the reactors is expected to reach full capacity around 2030.

