“The suspicion that Russia is likely behind the alleged attacks is backed up by evidence from communications intercepts, known in the spy world as signals intelligence, amassed during a lengthy and ongoing investigation involving the FBI, the CIA and other U.S. agencies. The officials declined to elaborate on the nature of the intelligence. The evidence is not yet conclusive enough, however, for the U.S. to formally assign blame to Moscow.” American intel agencies are somewhat certain the Russia had something do with the weird microwave/sonic attacks that harmed US officials in Cuba. That’s about all they’re certain about as they continue to race to reverse engineer what happened.