U.S. intelligence review says "very unlikely" foreign adversary is behind "Havana Syndrome"

A multi-year U.S. intelligence review has deemed it "very unlikely" that a foreign adversary is behind the mysterious neurological symptoms known as "Havana Syndrome" that have been reported by more than a thousand American officials since 2016, eliminating a leading theory shared by some victims and lawmakers that U.S. personnel were being targeted by a hostile government. 

The unclassified assessment, released Wednesday by the Office of the Director of National Intelligence (ODNI), reflected the views of seven agencies that participated in the inquiry.

"Most [intelligence community] agencies have concluded that it is 'very unlikely' a foreign adversary is responsible for the reported AHIs," the assessment said, noting different agencies had varying levels of confidence in the finding.