Anyone who thinks Ukraine is comparable to Cuba clearly doesn't know their history. Here's the difference. In 1994 Ukraine (at the rest of the world's insistence) gave up 1,900 strategic warheads, 176 intercontinental ballistic missile. About 1/3 of the world's nukes. They gave then to Russia and in return they were promised via the Budapest Memorandum of Security Assurances. It is a political agreement between Ukraine, Russia, the U.K., and the U.S.
According to the memorandum, signatories Russia, the U.S., and the U.K. agreed to respect the “independence and sovereignty and existing borders of Ukraine” after the country agreed to give up its nuclear stockpile. Ukraine was also promised that its territorial integrity and political independence will be maintained and that the signatories will not use economic coercion against Ukraine to their own advantage.
Comparing it to Cuba is a propaganda tactic to justify his illegal invasion of Crimea in 2014, and now illegal invasion of Ukraine. Don't give him the satisfaction of justifying his tyranny.
No I'm not saying we should enter this but Ukraine is the victim here.