What is your definition of a neo-con? Is it simply a conservative who supports a strong national defense, and being a reliable ally? Or do you mean something else?
Sometimes you can define NeoCons or the NeoCon doctrine in absolute terms or you can define relative to other foreign policy doctrines.
So, in absolute terms, we can say that one componant (among many) of the NeoCon doctrine is based on the premise that the US won the cold war, and is the last remaining superpower, thus the US is the world hegemon.
Or, relative to another foreign policy group such as the Liberal Interventionists, we can say that NeoCons and Liberal Interventionists have a very idealistic view of foreign policy in that they both like to use humantarianism and nation building in foreign policy. But the Liberal Interventionists and the NeoCons differ in that the Liberal Interventionists are mutilateralists and the NeoCons are unilateralists.