Russia signed a deal in 2023 leasing land in Cuba for 30 years.
https://www.cnn.com/2023/07/13/americas/cuba-russia-relations-navy-ship-havana-intl-latam/index.html
a deal which...if you read the article..
“....allowing Russia to lease land in Cuba for up to 30 years, develop beachside tourist facilities near Havana, open a supermarket with Russian products and supply the island with badly needed fuel”
Even CNN can’t seem to find a military base in there