Yep. Total war seems out and I'm not certain Israel would win against the combined might of the Russian (and probably Chinese) backed petro/arabian states. Not without US troops or nukes. And we don't want that.
There is a radical idea.
Allow Palestinians (women/children first) living in Gaza/West Bank to become Israeli citizens. Start with the women/children. Then males under 12/13 and those over 70. Then figure out a way to deal with the rest. Allow them the full rights and privileges of a 1st world Western liberal(ish) democracy.
There is no way to kill them all without starting a 50 year war or one that can only be ended quickly with nukes.
Yes, I know this won't happen but I see no other way to bring the Islamic world trapped under theocracy into the Western world.
Yeah none of that is going to happen. Neither side would want anything to do with such an idea. Palestinians don't want to be Israeli citizens. And Israel is for damn sure never going to be a Jewish minority state. Which basically means it doesn't exist, at least not as its intended purpose.