The two arguments are not mutually excusive.
Simon makes a good point and the U.S. has made the situation worse for Cuba. Trade with the Cuba over the years would have hastened the downfall of communism -- freedom begets more freedom. I believe in honest relationships with all nations and entangling alliances with none. Call me a rebel

However, it is equally ridiculous to blame the U.S. for Cuba's very poor choices. Ultimately, Cuba shaped its own destiny.