I don't know what else to conclude about the Isreali objection to a deal which prevents Iran from building atomic bombs, other than that they do not actually fear that eventuality as much as they've previously indicated. Israel seems much more concerned about the regional influence, both legitimate and illegitimate, posed by an economically reinvigorated Iran. I suspect that the Israelis believe that even if Iran had a bomb they would never dare consider to use it for fear of their own subsequent obliteration by either Israel, the U.S. or both. Regarding the national security interests of the U.S., I don't see Iran ever becoming a major threat - short of their obtaining atomic weapons. Our current national security situation seems a clear case of U.S. national interests not wholly aligning with those of Israel. Which is to be expected from time to time.
Netanyahu has made a strategic error when he previously asserted that the greatest threat posed by Iran is their development of atomic weapons. I think it now obvious that Netanyahu discounted the possibilty that there would be a negotiated resolution to the Iranian nuclear weapons concern. He assumed that he and the Israeli lobby could manipulate the U.S. to sending more young men and women to fight and die in the middle east, to spend more Trillions of American tax dollars to achieve his strategic Iran objectives. All Israel would then need do is hold our coat and applaud our national sacrifice. With 'friends' like that, the U.S. doesn't need any enemies.
Israel, being a foreign sovereign power, simply has FAR too much influence on American national security decisions. We are far closer allies with the Brittish, and yet they don't have nearly as much influence. Israel's existance will never be a question as long as the U.S. also exists, however, Iraeli influence on our national security politics needs to be strongly dialed back.