FBI suspects foreign spies may be targeting scientists with access to U.S. nuclear secrets, following the disappearance or death of at least 10 experts over recent years. Republican lawmakers, citing tabloid reports from *The Daily Mail* and *The New York Post*, sent letters to the Department of Energy, Defense, FBI, and NASA demanding answers. They warned the cases could signal a “grave threat” to national security, urging agencies to investigate potential connections between the scientists’ classified work and foreign actors.

White House Press Secretary Karoline Leavitt confirmed President Trump is collaborating with the FBI to “holistically review” the cases, aiming to identify common threads by mid-April.