Since other commenters aren’t bothering to look into it at all:
Cuba says it has disrupted a scheme in Russia to recruit Cuban citizens to fight in Ukraine.
In a statement, Cuba’s Foreign Ministry called the alleged plan a human trafficking ring. It said Cubans, both in Russia and on the island, had been recruited to fight in Russia’s war against Ukraine.
Part of the problem is they’re being lied to on what exactly their job is. This has been reported on previously. The job description was never a soldier. It’s blatant human trafficking and slave soldiering.