What to know about Havana Syndrome and a device that might be linked to it

TL;DR

Havana Syndrome, also referred to as anomalous health incidents (AHIs), involves symptoms like dizziness, fatigue, memory problems, and impaired vision.
Some affected individuals describe hearing intense, high-pitched sounds, which some believe are related to directed sonic or microwave attacks.
Over 1,500 U.S. officials and their families have reported experiencing these incidents since 2016 in various countries.
Incidents have occurred in locations such as Cuba, Vietnam, and China, impacting White House staff, CIA officers, and FBI agents.
Experts and some victims suspect the use of a secret weapon utilizing high-energy microwaves or ultrasound.
A 2024 House Intelligence Committee report challenged a 2023 U.S. intelligence assessment, suggesting foreign adversary involvement is increasingly likely.
U.S. intelligence assessments on the cause of AHIs have been divided, with some agencies finding foreign involvement unlikely, while others suggest a possibility.
A suspected link between attacks in Tbilisi, Georgia, and a Russian intelligence unit has been reported, along with evidence of acoustic weapons testing by the same unit.

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