No they haven't, it's simply one possible explanation. It's still be "best" (i.e. most convenient) theory. Besides, these "attacks" even happened in Washington DC. Was that Russia also? Who did it, how did they do it, and where are the weapons? Russia is the US's favorite boogeyman, and I'm sure they will "retaliate" through economic sanctions or military intervention. In all likelihood, the Havana Syndrome is a fabricated narrative and mere pretext for unilateral aggression.

Consider the last paraphraph of the article:

> "Most importantly, if and when more evidence is gathered, Putin, Nikolai Patrushev, and their officers must be held to account."

This is not "news", it is war propaganda. Besides, it's immensely hypocritical. When was American government and intelligence officials ever held to account for orchestrating and instigating violent aggression abroad?