Aren't the important guys living inside the embassy? if not you would still protect their homes if this weapon would exist and US knows about it. If it exists for 50 years and somehow US is incapable to protect against it or prove it was used then what does this mean?
Maybe ambassadors do, but it's not like they can run the show on their own. US embassies are pretty large operations with many different functions. IIRC, the people who think they were targeted by that weren't ambassadors, and at least some were involved in intelligence missions.
Still I expect US intelligence would know all the side effects of this weapon and not have to struggle identifying it, I expect they tested it 50 years ago already (same how they tested radiation effects, brain washing with drugs and all the other disturbing experiments they did)
> Still I expect US intelligence would know all the side effects of this weapon and not have to struggle identifying it, I expect they tested it 50 years ago already
You seem to be assuming US intelligence is as scarily competent as it is in the movies.
For instance even if they did test something similar 50 years ago, in the real world, all the people with that expertise would have retired long ago. To put it in perspective (with an imperfect analogy): 50 years ago, software engineers were writing code in COBOL and IBM 360 assembler, how quickly would a senior Java developer be able to parachute in and figure out and fix a subtle bug in an application written with those technologies?
Yes, it makes sense if such old stuff was experimented with in secret but then not used for decades.
But since we are entertaining conspiracies, what if US also is using this weapon, then they won't want to admit it and give clues on how to prove it was used.
My opinion(very uninformed) is that it is more probable that if a device is involved then it is some kind of spying/scanning tool and not a weapon.