Can someone tell me why all logical reasoning went out the window when the idea of creating the Dominion of Israel? Especially since, in 1939, the British Government, after dealing the the 36-39 Arab Revolt, decided that Palestine WOULD NOT be a Jewish homeland, and that all Jewish immigration would be ended.

Why would you push nearly 1 MILLION Arabs, into yet another revolt, this time when the British can least afford it? I've been told that decisions of this TL have to be 'realistic', yet this is the most far-fetched, pie in the sky event I've seen.