Havana syndrome: Report links mystery illness to Russian intelligence unit BBC.comUnraveling Havana Syndrome: New evidence links the GRU’s assassination Unit 29155 to mysterious attacks on U.S. officials and their families The InsiderAn Alleged Russian Spy Was the Chef of DC’s Mari Vanna WashingtonianRussian nexus revealed during 60 Minutes Havana Syndrome investigation into potential attacks on U.S. officials CBS News‘Havana Syndrome’ linked to Russian spy unit, ’60 Minutes’ report says USA TODAY