https://9now.nine.com.au/60-minutes/havana-syndrome-the-mysterious-illness-striking-down-us-officials/27d3425c-274e-40a7-926f-ac33ff9e2d62

Russian Influence in Cuba, Nicaragua and Venezuela

“In recent years, Latin America has become an increasingly strategic location for Russian President Vladimir Putin. Moscow's relationship has been special with the so-called Caribbean Triangle, which includes its historical Cold War allies, Cuba and Nicaragua, and also Venezuela.[2] Through arms and energy diplomacy, these leftist regimes have become Russia's bridge to the strategic penetration of the Latin American continent, as they allow Moscow to evade sanctions and geopolitically challenge the US in the region, just like the Soviet Union did in the past…..”

https://www.counterterrorismgroup.com/post/russian-influence-in-cuba-nicaragua-and-venezuel