Raúl Castro knows a sucker when he sees one. Having watched Barack Obama, the world’s worst negotiator, hand concession after concession to the mullahs of Iran, he is going for a big score in the current negotiations over resumption of diplomatic relations, at President Obama’s initiative. Far from being grateful that he has been handed huge plums, he is making ridiculous demands. (And given Obama’s track record, you can’t call them unrealistic.) Alastair Jamieson reports for NBC News: Cuban President Raul Castro has demanded that the United States hand back its Guantanamo Bay military base - an apparent bargaining tool...