I'm curious as to the military ramifications of this since the nautre of Israeli society and therefore the structure of its military is different than the Arabs and more suited to Western equipment than Soviet equipment. This same is true of the Arab states being supplied by the West.
I suspect the
military ramications will be minimal, Israel was using upgraded Sherman tanks until the
1960's. The structure of Israel's armed forces is and was based overwhelmingly on their strategic situation not the equipment they've used over the years or who was in power.
For example the difficulty for Egypt to provide more pilots than planes for its airforce and provide high serviceability rates lead them to embrace SAMs as a major defence against aircraft. Would this be excacerbated with more complex Western aircraft, and would western SAMs address this problem?
Cronyism, corruption and inferior manpower utalization has always been the bane of Egypt's (never mind Iraq or Syria's) armed forces no matter which superpower has been giving them equipment & advisors. Soviet & US advisors alike have bemoaned these problems for decades.
In contrast would Soviet aircraft and AFVs, with the generally poorer serviceability rates, poorer build quality and poorer avionics be able to effectively operate in a military built around the high quality of its people and their exellent ability to operate independently without tight command and control?
Eh? Soviet aircraft tend to have
better servicablity, whatever other flaws they have.
You also need to consider the models TTL's Israel gets & if it'll be an ''export only'' type which had much of the hi-tech gear stripped out.
Still I doubt it would matter much either way airpower has always been Israel's strong point and it's aircrew have always been
much better than their Arab counterparts no matter which aircraft they've used.
What would happen to Israel when the Soviet Union fallls? unless this somehow butterflies it away, would we get something similar to a Cuba or Noth Korea clinging on?
You assume Israel even needs to go full Communist to be a Soviet ally. That isnt strictly speaking true, if nothing else you'll butterfly the Doctor's Plot and Soviet ''anti-Zionism''. You may also see the Soviets being more open to allowing Soviet Jews to emigrate to Israel and a lessening of anti-semitism in Russia, if Israel remains a good ally. Oddly this may result in a much higher number of Jews staying in the U.S.S.R instead of rushing to Israel at the first oppertunty.
As for the long-term effects on the U.S.S.R as a whole, it could well butterfly it's collapse. OTL that was a pretty darn unlikely event to begin with.