I'm pretty sure the animosity is about Israel colonizing the area as an ethnostate. The Palestinians have as much legitimacy to the land as they do, and yet they displaced them much the way European colonists displaced the first nations in the United States and Canada.
After WWII the international community was supposed to come to terms that every people, even the least liked displaced refugee deserved regard for their personhood and to be afforded basic civil rights.
Israel has repeatedly failed to get that memo, often relying on notions that Palestinians are religious enemies, condemning Palestinian peoples as the German Reich did the Jews.
But on the international stage money and the whimsies of plutocrats decide who has guns and power, and more of them like Israel over Palestine for now. (And it's no small detail that Israel is more white-friendly than the rest of the middle east.) Principle will be nowhere to be found if ever attitudes towards Israel change.
And this explains the objectives of Hamas and Hezbollah in the Strip. They know the Israeli state is eager to storm Gaza and jackboot every civilian neck that crosses their path. The state just needed justification to take its mask of and express the brutality in wants to. The two fronts simply provided that excuse.
And despite warnings from the US about the shit show in Fallujah, they're chomping at the bit for it. Moreover it's going to be a mess that the world will get to see up close, with rogue cameras and drone footage showing the truth of urban massacres that might even outdo the holicaust in instilling in us a sickness for the ultraviolence.
Israel isn't God's chosen, and we're about to see exacty how much they are shit-throwing apes just like every other sectarian identity. Just like the rest of us when we fail our own principles.
Maybe, we, as a species will get it this time, but we've shown to be daft before.
I once wrote a summay of the story of Sodom in the modern day, substituting the United States for the angry god.
Instead of two angels, the strangers were US dignitaries come to aid negotiations between belligerents. When the mob came to know them, it was to arrest and interrogate them (probably roughing them up or killing them in the process). Lot's daughters were staffers at the safe house and were just told to slow them down for a few minutes while they were packed into a vehicle and driven to safety.
US Operations HQ loses contact with the delegates (cell and satellite services are disabled) and the US decides a show of force is appropriate. Some Senators call for the fury of God's thunder The President's situation team selects a list of targets to get the attention of the conflicting sides. Surgical strikes begin on state infrastructure.
So the story tracks very well.
So yes, if the US or the EU or China was able to send a negotiator and enforce peace with a proportional response policy, we could perpetuate a ceasefire for a long time, and lower tensions with a robust aid program. A glowing divine avatar who could call down lightning, locusts and meteor showers wouldn't be necessary, but could also serve to gather the class into a circle to settle differences.
But the US isn't going to do that, or let anyone else. At least for now.