The story started in 2016, when US and Canadian embassy staff in Havana began reporting mysterious medical symptoms -- headaches, vertigo, strange sounds and more. As time went on, more employees in other embassies started reporting similar experiences, causing international concern. But what was actually happening? Was this the result of widespread panic? A side-effect of arcane spying equipment? Something else? Tune in to learn more about the controversy that continues today.

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