US defense official had ‘Havana syndrome’ symptoms during a 2023 NATO summit, the Pentagon confirms The Associated PressUnraveling Havana Syndrome: New evidence links the GRU’s assassination Unit 29155 to mysterious attacks on U.S. officials and their families theins.ruSenior DOD official experienced ‘Havana syndrome’ symptoms at NATO summit in July, Pentagon says ABC NewsRussian nexus revealed during 60 Minutes Havana Syndrome investigation into potential attacks on U.S. officials CBS NewsPentagon reveals senior official reported symptoms of ‘Havana syndrome’ Al Jazeera English