If the sales go through, I’d like to see the response of the AIPAC. It’s not like we can depend on Israel to deter Iran. Of course, I’ve heard chatter of a (temporary, of course) alliance between the Israelis and the Saudis against the Iranians. I doubt that would fly either. I think having more allies in the middle east is a good thing, and if weapons sales to countries concerned about Iran makes more allies for the US, good for us.
A test of the Walt and Mearsheimer hypothesis