Director of National Intelligence Tulsi Gabbard has rescinded intelligence community assessments from the Biden administration regarding Havana syndrome, the mysterious ailments reported by American intelligence officers and diplomats.

The withdrawn assessments had previously cast doubt on the theory that a foreign adversary was responsible for the range of symptoms experienced by U.S. personnel. These symptoms have been reported by American spies and diplomats in various locations around the world, beginning with incidents in Havana, Cuba.

According to a memo sent to congressional leaders, Gabbard's office cited multiple concerns with the previous assessments. The memo stated that the Intelligence Community Assessments "selectively excluded evidence and intelligence" and mischaracterized sources "to suppress alternative analyses."

The memo also alleged that the assessments omitted key information related to source quality and relied on what was characterized as an "ethically flawed medical study." These methodological concerns formed the basis for the decision to retract the findings.

Havana syndrome refers to a collection of symptoms including headaches, dizziness, and cognitive difficulties that have affected hundreds of U.S. government personnel worldwide since 2016. The cause of these incidents remains a subject of ongoing investigation and debate within the intelligence community.