“All that changed when Irving Kristol pushed his fledging neoconservative movement under the GOP tent and poisoned the well water.”
To show you how meaningless the term “neocon” has become, here is a summary of the platform. (Note that many of its tenets and principles are those allegedly held by many FReepers who derogatorily call those with whom they disagree, neocons.)
https://en.wikipedia.org/wiki/Neoconservatism
That’s a perfectly sound definition of neoconservativism, with special attention to military intervention. I’d have noted that Kristol and company were Trotskyites, with no clear indication that they walked away from that ideology.