We do business with "brutal and racist" regimes everyday. What makes Cuba different?
Did I say we should do business with other brutal and or racists regimes or that Cuba was different?
How have our sanctions helped the people we were trying to help by punishing their government with said sanctions?
"How have sanctions helped the people ..." I would guess that is because sanctions are not supposed to help people. If you impose "sanctions" on a country and you end up helping them you are doing something wrong.