It's not just that Rand is hedging his words more or something; he's flatly more hawkish than Ron, and it isn't good to see.
Rand is not going to do anything without a Constitutional Declaration of War. He's giving his opinion on the matter yes. Quite frankly, I would not sit idly by and watch a bunch of thugs beat the snot out of an old lady on the street corner. That is what ISIS is doing.
So I agree, go kick their asses. But if you want to use the US Military to do it, do it like Rand is saying to do it. Get Constitution authorization. I see nothing wrong with that.
Obviously the USA is responsible for stirring the shit up over there. So the best solution would be to stop stirring the shit up. At least if there is going to be another war of aggression for whatever reason, go through the motions.
This is what I believe Rand's stance is. He has an opinion that if he were in power, he'd want to clobber those thugs known as ISIS. I agree. But he also says we need to have a national debate on the idea of using the military and understand the reasons why things are so FUBAR in the ME. That inevitably leads to the point of understanding that things are so FUBAR because of constantly wanting to clobber those thugs.
So he's just taking the long path to the same action that his dad always advocated. Ron Paul went from point A point B in his foreign policy. It was easy to know that Ron Paul was right if your idea of freedom and liberty was based on common sense. Ron Paul also missed picking up a lot of support because while taking the shortest path from point A to point B is the most efficient route, it also the most difficult route that leaves a lot of people alienated, since most people lack common sense.
Rand Paul is also going from point A to point B in his foreign policy, but he is taking a much longer route. It's more like Rand is going from point A to point C to point D to point X to point F etc... He is picking up support and followers on his way to point B. No, it's not the most efficient route, it doesn't make a whole heck of a lot of sense, but at the end of the day, he is going to the same place and he is carrying much more support with him so that when he arrives, his point is more than just a fancy way to win an argument, but a true foreign policy that the country stands behind spanning from both extremes of the political spectrum.
It makes sense to me what Rand is doing. It is consistent in so far as consider the audience. He doesn't need to convince you or me that the most principled and efficient path to a non-interventionist foreign policy is to stop stirring shit up and withdraw from illegal occupations and shut down unaffordable military housing over seas.
None of that ever happens if the only support Rand has is support from people with common sense. Common sense should tell you that Rand has to be president of people without common sense in order to make ANY point become an official US policy. So good job Rand in expressing an opinion and explaining that your opinion really doesn't matter when it comes to official US foreign policy.