If the US pulled all support, Israel could and almost definitely would press on with it, probably not as efficiently as they are currently, but still the war would continue. Maybe the US pulling support would lead to a quicker end, maybe it would just drag things out, maybe it would lead to extreme escalation with a desperate Israel choosing to use their nuclear weapons either against Hamas or against other Middle Eastern nations that choose to get involved without the US acting as a deterrent.

Yeah just like the previous three times the US threatened to pull support and israel instantly stopped doing war crimes…

People are still under the impression that the army that got completely owned by dudes with water pipe rockets can support a full war without American support? Especially with Hezbollah in the north…