Lemon Law,
This simple assumption on "what if" goes, in my eyes, to clarify several points:
1. No Arab country, let alone Arab population, was ever in an existential danger because of Israel. Ever. If Israel wasn't attacked in 1948, I'm pretty certain it would not go to war over anything. The population was non-aggressive - many well educated European Jews who ran away from the issues in Europe. I can't see them initiating a war to expand their territory, although no one can know for sure;
2. For the Arabs, it was always a matter of respect more than anything else. They feel - justly - robbed and invaded. But this is weighed against the very existence of the Jewish people. One side feels injustice, while the other fears for its collective lives;
3. All considered, Israel showed more restraint and civility in its conflicts than any other country around. Israel name is many times brought up with allegations of ethnic cleansing; this is of course bullshit. So far, the only country to attempt ethnic cleansing of Palestinians was Jordan (Black September);
4. However good intentioned you are, you still have to operate in a certain environment. That of the middle east can not be compared to Quebec. Your adversaries have certain moral and ways of operation, you have to adjust. If they fight from populated area, you WILL be forced to shoot into population, can't escape it. You can only try to minimize your losses;
5. The most amazing thing is - can you point at another country which is hanging on the brink of extinction like Israel? Which ONE country in the world got attacked over and over again by a multitude of countries and organizations, many times its size? It has no example anywhere.
Arabs have lost many wars and some territories but they are all still standing. An Israeli defeat would surely be a 2nd holocaust.
This is why, in my eyes, Israel is perhaps the only country in the world that can morally possess nuclear weapons. While other countries do it for influence and balance, in the case of Israel, it's a matter of life and death.
If you gave Israel the choice of WMDs or complete normalization and eternal peace, I don't think it would take more than one minute for the Israelis to decide.
This is not, and it has never been, a balanced conflict. This is not between two countries fighting for territory. This is much more profound.