always the possibility other Muslim countries would step in to prevent the Palestinian slaughter, and then so would other Western nations on Israel's side and that's how you get WW3.
Who, exactly, might intervene?
Syria: They are in no conditions to do so, they still have an active civil war, with a recent drone strike that killed 100 people, they going to be focused on finishing up the Islamists that remain in Idlib.
Egypt: They warned the Israelis about the attack, that the Jews didn't pay attention that's on them. But by warning Israel they are clearly not on the Palestinians side, they might send ambulances to Gaza and let some of them in their hospitals but that's as far as they'll go.
The Saudis: Why? They haven't done so before, and they won't now. Besides the Hamas flavor of Sunni is not compatible with Wahhabism.
Jordan: Black September, they haven't forgotten about that.
Lebanon: Is too weak and politically fractured to do anything.
Iraq: Same as Lebanon, maybe some drone or missile attacks by the PMFs, but that's about it, any ground forces would have to go through either Jordan or Syria, both unlikely to given them permission.
Turkey: Erdogan doesn't give a shit about the Pallys, besides he has the Kurds, Syria and his adventure in Libya to focus on.
Libya: Is a mess.
Morocco: Has good relationships with Israel, might fight Argelia in the near future, why involve themselves in some war in the Levant?.
Argelia: Too far away, might fight Morocco in the near future, why involve themselves in some war in the Levant?
Iran: How? Besides maybe lobbing a few missiles at Israel and some operations by the Quds force, how could they turn the tide? They don't have the logistical capacity to bring enough forces to bear in the Levant to stop Israel, not especially since the Jews are mobilizing.
Hezbollah: Maybe, they could try an open a second front and launch rocket barrages at Israel but that would just delay the inevitable, they could bloody Israel like they did back in 2006, but Hezbollah was on the defensive back then and this time they'll have to go on the offensive to help Hamas and the IDF seems to be ready for them.
The Houthis: If they want to get anywhere close to Israel they'll have to go trough either Saudi Arabia or by the Red Sea. The Saudis are not going to allow them to do anything, their war is not over yet. And if they try anything by using the Red Sea, say a drone strike, they'll get spotted by either Egypt or Saudi Arabia, both would likely tell the Jews about it. And this all assuming they have the capabilities to do so.
