There is an amusing article by Timothy Noah in the NYT which tries to "explain" neoconservatism. I myself think that the only explanation needed is the old observation about the zeal of the convert. Converts to a cause tend to be much more zealous, outspoken and energetic (and in some cases more extreme) than those who espoused the cause ab initio. And the neocons started out as Trotskyists (extreme Leftists) so their zeal upon conversion was all the greater for that.
Rather amazingly, Noah accuses neocons of being addicted to Hitler comparisons. He has managed to dredge up a few such comparisons -- reasonable ones -- but ignores the flood of such comparisons (generally highly unreasonable) emanating from Leftists!
But Noah now seems to have drifted away from the fairly centrist position he once held. He notes that most of the neocons are Jewish and proceeds from there to the old antisemitic slur of "double loyalty" -- the claim that that Jews cannot be relied upon because of their prime loyalty to Israel. That is the sort of language that the Left have reverted to these days.
Posted by John Ray