How would the world react when Gaza is invaded by a ground offensive from Israel?

How would the world react? Let's say Israel launches a ground offensive. They indiscriminately kills thousands of civilians by pounding them to rubble, shooting them and using them as human shields like in 2014.

Would anyone stop them from comitting genocide?

Ik after the hospital massacre with Biden's acceptance of israeli propaganda, the US and West will give the greenlight, so no real opposition will foment in Israel's genocide there.

But what about the Arab World? Protests have broken out everywhere. People are outraged. Jordan cancelled their summit with Biden. Egypt can't afford to hold those refugees and blames Israel. They all do. Surely one Arab state will go to war to protect Palestinians, or their people will force them to?

What about Iran, Hezbollah, and the rest of the Axis of Resistance? They're really the only ones who pledged to support Hamas. Will they intervene? And even if they do, will America's might annihilate them, as they already threatened them with their fleet?