*predicated.

The history is far more complicated than that. Israel wasn't really born out of a desire to ethnically cleanse Palestine, it was born out of a desire for a Zionist homeland and for independence from the British. Immediately afterwards, literally the following day, the Arab nations attacked.

Furthermore, Palestine was never really a country over the last 500 years, not until 1988. It was a region in the Ottoman empire, then it was under British control, then it was proposed to be split such that a nation of Israel and a nation of Palestine could be established - however Palestinians rejected this multiple times. Even in the Palestinian Declaration of Independence they didn't really define their territory, saying "The State of Palestine is the state of Palestinians wherever they may be" but referencing the UN Partition Plan.

By all accounts, when Israel was established in 1948 they wanted their own territory in the region as partitioned by Britain/the UN, they didn't want control over the entire region. It was only after successive fighting between Israel and Palestine that Israel developed the attitude they display today.

Whether or not Zionists, Israel, the British or the UN were right in pushing for the formation of an Israeli state is another matter, but the Israel we have now is a direct result of the wars that were fought, wars that Israel won each time. This is markedly different from colonialism, where one nation rules over another but then later grants independence and goes back to ruling its own territory - Israel do not have any other territory to go back to. Palestine taking an "all or nothing" position, as they have over the last 70 years, just isn't a workable solution as it puts Israel in the same boat.