U.S. officials now suspect that the Russian government might have had something to do with what has made U.S. diplomats in Cuba and China severely sick over the past two years.Gizmodo reports that's the latest theory being floated by anonymous sources to NBC News.
The attacks have resulted in some diplomats experiencing permanent brain damage. The theory that Russia is behind them is reportedly based on signals intelligence collected by the FBI, CIA, and other unnamed intelligence agencies.