+ The US sprayed 'agent orange' on trees near their firebases, and the vast majority of the 'victims' were American soldiers, not Vietnamese. Obviously, they didn't know what it would do.
+ The 'embargo' is 100% the fault of Fidel. He put nuclear weapons 40 miles away from florida, from those who backed by the credible threat of using them, thereby putting hundreds of millions of lives at risk. That's why the embargo started - he had ample time to wind it down. Jimmy Carter, Clinton, Obama - and even Bush Sr. would have made a deal of Fidel agreed to have elections.