Earlier quoted context omitted.
Putin seems to like turning back the clock on that kind of thing. Just because it's irresponsible doesn't mean he won't do it. He's a rational actor in terms of his own grip on power and nothing else.
Again, Cuba's no longer a vassal state. I suspect they have little interest in hosting Russian nuclear missiles, and I suspect the US would be more than happy to help them resist a Russian effort to restore the Cold War situation.
http://www.theguardian.com/world/2014/jul/16/russia-reopenin...