Carlos Alberto Montaner has an Op-Ed in the Miami Herald, which essentially outlines a hardline stance for U.S. policy toward Cuba.
While Fidel Castro is alive, any significant concession the Obama administration may make to Havana will be counterproductive. It will be interpreted as, ''Fidel Castro is right, and we don't need to make any substantial change in our totalitarian model.'' However, the moment Fidel disappears, Washington must make a goodwill gesture, even to Raúl Castro, as a sign of encouragement to the reformist forces, with the explicit message that the United States is willing to generously help Cubans transform the country into a peaceful and reasonably prosperous democracy.
Since he argues that Raúl will never allow real political change in Cuba, I am not sure why he doesn't want to wait for him to die too (and what happens if Fidel keeps on going like the Energizer bunny?). Regardless, he shows the same odd logic that has trapped the United States for too long, which can be summed up in the following manner:
The embargo was intended to force the Castro regime from power, but instead has helped keep it in power. However, getting rid of the embargo would be a boost to the Castro regime, and thereby keep it in power.