This is according to former KGB spy Yuri Shvets who defected to the US in 1993.
What this says to me is, former spy whose knowledge of the Russian security state became outdated decades ago is desperately spewing bullshit in order to create the illusion they’re still useful.
The counterfactual here is even funnier, collapsing nation russia in 1993 somehow managed to develop illness-giving-untraceable-energy-weapons and then just didn't use any of them for a good 30 years
Did the US ever even claim to find any evidence of the Havana syndrome being caused by energy weapons? Like, they closely investigated for over the decade while it was apparently going on. The technology to detect EM waves from long wave radio all the way up to gamma rays has existed for a long time and isn't anything novel at this point as far as I know. And while there are ways of making signals hard to detect, they pretty much all require the received energy to be somewhat similar to the backgrouond noise level and preferably quite a lot lower. Instead, a directed energy weapon would have be irradiating the receiver with quite a bit of power unless the Cuban/Soviet forces found some special signal that can disrupt brain activity. And even then, if it follows a specific pattern, then the odds of detecting it would go up a hell of a lot.
This garbage theory originated in Havana and some scientists noted that it occurred during a time when embassies were being fumigated as Zika was a concern, and exposure to the fumigants would've caused the symptoms being experienced
And it has turned into this absolutely deranged, nonsensical plot about how 'the evil countries' are using hitherto unknown weaponry on our brave men and women
The closest to actual evidence IIRC was that all the embassies etc that were effected were using the same insecticide. You'll note that this is not a directed energy weapon.
X-Files, season 6 episode 2 - Drive. ELF antennas for Trident Sub communications causes people's heads to explode. This is the source of Havana derangement syndrome.
Project Seafarer was a real project in the 80s too. And a smaller version of Project Sanguine that in the previous decades had been campaigned against and sabotaged until they were forced to abandon it.