The problem is, the British Government promised the Jews and Arabs the same land in exchange for loyalty during WW1 and sat on the topic for 30 years, never to form a viable resolution. During that time, Jews fleeing the Nazi Regime were turned around, and the Mandate was perpetually on the brink of civil war. After 1945, the powder keg exploded and you had an SS Recruiting Sergeant rile up the Arab nations to finish the job Hitler started. Where were the Jews supposed to go after 1945? There was no guarantee that another Holocaust couldn't happen again, America had the Ku Klux Klan. In other words, it was the least bad option for a lot of Jews.
The problem is that Zionists decided to colonise Palestine therefore creating the dispute over who got to have it - the natives or the colonisers. Without the Zionist project there would have been no problem.
That cack about Haj Amin is just cack. Demonisation. The Arabs didn't go to war in 1948 to kill all the Jews, they went into it to prevent the creation of a Jewish State for Jews over their heads. They were right to fear what the consequences would be - dispossession and exile on a mass, if not total, scale.
The early colonists were mostly Russian and got there decades before Hitler arrived on the scene, let alone got his anti-semitic programme under way. One which, by the way, did
not turn genocidal at the prompting of Haj Amin. Just thought I'd better point that out, a different opinion having been expressed recently.
I think it's fair to say you don't really know anything about the Zionist story, so I'll get a bit lectural. To set the stage : in 19th Century Europe Jewish life became normalised in Europe, starting with the French Revolution and the emancipation of French Jews and then the opening of the Italian ghettoes and it was general progress from there. Russia lagged, of course, but that's Russia for you, and Russian anti-semitism was regarded as evidence of its semi-barbarism. By the 1890's this process had produced twin evils, in many conservative Ashkenazi minds, of miscegenation and a decline in deference to the proper Community Leaders.
Zionism is meant to be a counter to that. In their own country, not mixing with anybody else, Jews will rarely marry out, and they will rediscover their duty to their proper Community Leaders who bear the grave responsibility of running the country.
It was supposed to be easier than this.