Putin will deny it and Trump will believe him. Under 45, evidence is fake news!
The theory that Russia is behind the attacks, which has resulted in some diplomats experiencing permanent brain damage, is reportedly based on signals intelligence (SIGINT) collected by the FBI, CIA, and other unnamed intelligence agencies. SIGINT can include everything from text messages and voice calls to Morse code and radio waves, but the new report from NBC News doesn’t specify what may have been intercepted.
From NBC News:
The precise motive remains unclear, but the incidents have driven a wedge between the U.S. and Cuba that has led Washington to remove most of its diplomats and spies from the island. Early in the investigation, senior U.S. officials raised the possibility the illnesses were unintended consequences of some new spying technology. But the fact the incidents continued long after they became publicly known has cast doubt on the possibility that the damage was accidental.