Plans for a U.S. nuclear-power revival have excited uranium investors, stoking demand for shares in companies that produce the fuel.

US President Donald Trump on Monday ruled out allowing Iran to enrich uranium under a nuclear deal despite Tehran repeatedly stating that its nuclear programme is a red line. The issue of uranium enrichment has remained a major point of contention between Washington and Tehran in the five rounds of talks that have taken place since April 12.

The US won’t allow any uranium enrichment as part of a potential nuclear deal with Iran, President Donald Trump said. Most Read from BloombergWhere the Wild Children’s Museums AreBillionaire Steve Cohen Wants NY to Expand Taxpayer-Backed FerryThe Economic Benefits of Paying Workers to MoveNow With Colorful Blocks,