Very well done and as these things go, plausible. Also an excellent source of many, many, many PhD theses, some of which might even be as well written as that installment.
Politically though it seems unlikely. Israel was fairly left, as these things go (as was the Yishuv), but it is difficult to imagine it being plausibly Stalinist, particularly given its self-appointed mandate regarding Aliyah, something that doesn't mesh well with turning towards the Soviets...
The problem is not so much Quebec sovereignty, it's that Quebec sovereignty (by the sovereigntists) was expected to include:
Retention of Canadian Passports
Retention of the Canadian dollar
Not accounting for Quebec's share of the national debt
Retention of the benefit of Canadian treaty...
Interesting stuff. A tantalizing mix of things other cultures have done (without so much detail that the construction is too obvious). Did you just select and blend?
Are all the democracies on that map really democratic? I mean Russia?
There was an excellent map in the online Atlas of the 20th century that showed the post-WWII Western Europe cycle of Conservative vs. Social Democratic governments. There is some merit in having a true UCS reflecting party...
In OTL there were various massacres on both sides (the nature of which are debated). If Israel doesn't pull through in '48 I sincerely doubt there'd be an organized genocide as such (a lot of dead sure; I suspect eliminationalist anti-Semitism filtered through into elements of Arab nationalism)...
I'd tend to think the basic problems for the Arab world are still there so the cold war dynamics would be relatively similar. There'd be lots of butterflies from Arab victory in 1948 though (though I tend to think the monarchies wouldn't last). There'd be somewhat more Jews in the U.S, which...