Former Secretary Dan Brouillette (64, photo), who served as Secretary of Energy from 2019 to 2021 during the first U.S. administration of Donald Trump, said in a written interview with the Dong-A Ilbo on the 8th (local time) that the biggest obstacle related to Korea's introduction of nuclear-powered submarines (nuclear submarines) is “the legal system, not technology.” “Nothing can move until there is a new or revised agreement,” he said, referring to the Korea-U.S. nuclear energy agreement, which strictly limits military use of U.S.-produced nuclear materials and related technologies. It is known that the Korean and U.S. governments are currently continuing discussions on various measures to introduce Korea's nuclear submarines, such as revising the entire nuclear energy agreement, revising some provisions, and concluding a separate agreement. The first related meeting was held in Seoul last month, and is scheduled to be held in Washington, D.C. this month. In this situation, former Minister Brouillette predicted, “The United States can much more easily approve limited authority with a clear scope and safety measures rather than comprehensive enrichment and reprocessing authority.” Rather than revising the Korea-US nuclear agreement,