HAVANA–The US State Department warns US citizens not to travel to Cuba because numerous US Embassy employees in Havana have been targeted in specific attacks that have caused hearing loss and serious central nervous system injury, but the culprit, means, and motive for the international crime remain a mystery despite a year of reporting.  Senator Bob Menendez (D-NJ) describes the incidents as “brazen and vicious attacks,” on our diplomats.  Between November 2016 and August, 2017, victims complained of hearing strange sounds that targeted specific individuals in hotel rooms and residences.  24 of 80 embassy employees examined were diagnosed with mild traumatic brain injury, likely caused by “trauma due to a non-natural source.”   Senator Marco Rubio (R-FL), who chaired a January 9, 2018 US Senate Hearing on the attacks, describes the weapon used as “very sophisticated technology that does not exist in the US or anywhere else in the world.”  Without knowing who did it and how, Todd Brown, Diplomatic Security Assistant Director at the US Department of State, testified that he cannot assure the safety of diplomats coming to Cuba.