There are a lot of idiots who think everything that's wrong in the Middle East would be fixed if only Israel was removed. Many believe we don't need to continue to support Israel because they have enough weapons to make it on their own. Both ideas are totally manure.
The terrorist tactics that ISIS and Al Qaeda use today were tested on Israelis by Palestinian terrorists starting in the 1970's. Then, lots of people said the Jews brought it on themselves and it was nobody else's problem. Now, the terrorism has expanded to include everybody else who doesn't practice Islam exactly according to whichever Jihadist nut is holding a gun to their head. As Jews were in the run up to World War II, Jews are today the canary in the coal mine. It may start with them, but it never ends with them.
By now, everyone should realize we have big problems with Islamofacism, whether it's Sunni ISIS or Shi'ite Iran. Of the two, Iran is the more dangerous. Iran is working on a nuclear bomb. Iranian leaders organize frequent government sponsored street demonstrations around two slogans, "Death to America" and "Death to Israel." Iranian leaders have called Israel a one bomb country. They also have said that even if Israel retaliates with nuclear weapons, Muslims will win because there will still be over a billion Muslims and no Jews. Further, they are also working on an ICBM that can reach the US. The best we can hope for there is that they want to discourage us from protecting Israel. The worst case is that they are crazy enough to attack us. Everyone thought Hitler was a joke. It would be a big mistake to believe Iran is a joke.
If we leave Israel to fend for itself, we are risking a general war in the Middle East. The Saudi's and the Gulf States are so scared of a nuclear Iran that they will make a deal with the Israelis for a coordinated attack on Iran. The attack might include nuclear weapons, because against the Iranian air defense systems the Israeli Air Force can't deliver a conventional weapon big enough to destroy the Iranian centrifuges in their deep underground bunkers. They would have to use nukes.