Patrick Buchannan is the prototypical anti-Israel conservative, and nobody in their right mind would call him Libertarian.
I tend to think of the Libertarians as universally indifferent to foreign affairs (often to the point of delusion of course) but not specifically targeted. Mind you there are plenty of wingnuts in the Libertarian movement (as there are in the conservative movement and of then the majority of devoted lefties are all wingnuts). Some of those wingnuts probably buy into the BDS hogwash.
Yes, I do include Ron Paul as a wingnut.
You cannot be conservative and anti-Israel.
How about RAND Paul, is he a wing it?
Rand Paul has advocated cutting all aid to Israel. Rand Paul’s foreign policy would have similar results as Obama’s.