I am not sure that "what it takes" is achievable, by Israel or any other power.
Israel's situation is like Ukraine (and Taiwan) in that achieving their desired end state (peaceful neighbors or at least the ability to protect their women and children in perpetuity) relies on exterior forces intervening - NATO, in the case of Ukraine, the 7th Fleet in the case of Taiwan, and the "international community commanding a rules based order" (i.e., the US military) in the case of Israel.
All these exterior forces are to one degree or another unavailable (NATO), not up to the task (7th Fleet), or imaginary (an "international community").
I really don't see how Israel is going to get out of the strategic box they are in. Tactically, they remain superb. But strategically, they are in a very bad spot.
Israel’s fundamental problem is that it is to small in population and area to be secure in the midst of larger Muslim neighbors.
Israel, from the Med to the Jordan River, is only 50 miles wide. From Qiryat Shimona in the north to Be’er Sheva is only 150 miles.
Historically Palestine is an invasion path from the north by Babylonians, Assyrians, Persians, Greeks, Romans, etc. etc. and by Egyptians from the south. It was not much of a speed bump to Alexander’s army —
>>In the late 330s BCE, Alexander the Great conquered Palestine on his way to Egypt. The conquest was relatively uncomplicated as Persian control of the region had already waned.[123][xlix] Tyre and Gaza were the only cities that did not immediately submit to Alexander[124] who slaughtered their citizens as punishment.
https://en.wikipedia.org/wiki/History_of_Palestine
Looks like Gaza will be wiped out again.