Wait...I don't understand this "moral relativism." If he stands reasonably accused of blowing up an airliner full of innocent people, he should be arrested and given a trial, like every other criminal. Just because Castro wants him arrested doesn't mean he didn't do anything wrong.
Someone please tell me where the problem is, here. I'm willing to accept a good argument, because it seems the U.S. gov't should have a good reason for not arresting him -- and I don't know much about this case.
But I'll answer you anyway:
(1) there is not a single shred of physical evidence linking Posada to any crime committed in Cuba. Real countries present hard evidence to other countries before demanding extradition.
(2) Cuba has no extradition treaty with the US and has routinely denied US requests for extradition despite overwhelming physical evidence against persons residing in Cuba.
Therefore, Cuba's demand that Posada be extradited is ridiculous.
Do a google search on: Luis Posada Carriles
Yeah, that's my question, as well. If this guy did blow up an aircraft, Cuban or otherwise, why isn't he being treated just like any other terrorist. Just because Fidelito doesn't like him doesn't mean he is a good guy. If we play the "he's not a terrorist, he's a freedom fighter" game then others will, as well!