Cuba's President Raul Castro has previously said he is prepared to negotiate with the Obama administration, providing there are no preconditions. His brother, former President Fidel Castro, also last week praised Mr Obama for his commitment to tackling climate change.
The tense relation between these two countries is not at all recent, the conflict goes back to the mid-XX Century; their different ideologies make it apparently impossible to have a better relationship than the one they already have. I, for one, don't think President Obama, or any future American president for that matter, will remove the embargo if Cuba refuses to change its entire country's way of thinking. Communism has been one of America's foes for a long time, and Cuba is no exception.
Sources:
http://news.bbc.co.uk/2/hi/americas/8281756.stm
http://en.wikipedia.org/wiki/Cuba_–_United_States_relations
http://news.bbc.co.uk/2/hi/americas/8260104.stm
