Some of the classified documents recovered by the FBI from Donald Trump’s Mar-a-Lago home and private club included highly sensitive intelligence regarding Iran and China, according to people familiar with the matter. If shared with others, the people said, such information could expose intelligence-gathering methods that the United States wants to keep hidden from the world.
At least one of the documents seized by the FBI describes Iran’s missile program, according to these people, who spoke on the condition of anonymity to describe an ongoing investigation. Other documents described highly sensitive intelligence work aimed at China, they said.
Unauthorized disclosures of specific information in the documents would pose multiple risks, experts say. People aiding U.S. intelligence efforts could be endangered, and collection methods could be compromised. In addition, other countries or U.S. adversaries could retaliate against the United States for actions it has taken in secret.
A storied US agency, one that began under President Kennedy in 1961 with the aim of...
