Havana Syndrome linked to Russian military agency GRU, investigation indicates POLITICO Europe‘Havana syndrome’ linked to Russian unit, media investigation suggests The GuardianHavana syndrome linked to Russia assassination unit: investigation Business InsiderRussian nexus revealed during 60 Minutes Havana Syndrome investigation into potential attacks on U.S. officials CBS NewsUnraveling Havana Syndrome: New evidence links the GRU’s assassination Unit 29155 to mysterious attacks on U.S. officials and their families The Insider