I don't have anything against Israel, I wish the country all the best, but if you are going to be the world's largest recipient of foreign aid, then don't insult our president and don't undermine negotiations we have with other countries.
Finally, if we go to war with Iran it most certainly will primarily be for the benefit of Israel. Iran poses no substantial threat to the United States nuclear or not. It is a country whose military budget is a tiny, tiny fraction of ours, whose per-capita GDP is a tiny, tiny fraction of ours, and who has neither the navy nor any real means of ever striking the United States. Israel is an ally of the United States and the United States will defend the country if necessary, but don't pretend its primarily for our benefit, it would be to help Israel.