'Havana Syndrome' Affecting US Diplomats Linked to Russian Intelligence, Media Investigation Finds. Starting in 2016, American and Canadian diplomats reported being hit by unrest.
A unit of the Russian military intelligence service is believed to be behind it, according to an investigation lasting more than a year carried out by three media outlets. Moscow on Monday rejected this investigation as “unfounded” “This subject has been inflated in the press for several years now. And from the beginning, it has often been associated with Russia,” Kremlin spokesman Dmitry Peskov said.