What timeline are you writing from Fluttersky and CharlesRB with your talk of jewish migration to Siberia? Perhaps an alternate one where Soviet-Israeli relations stayed consistently good after the Israeli War of Independence through the 1950s and 1960s?
Of course, as we all know, in the real world fleeing Israelis joined the Diaspora in the west, and would have no truck with the East Bloc. The East Bloc had supplied the Nasserist Arab coalition with the military tools for destroying Israel , and in any case, the jews were not up for taking any chances with dictatorial states in Europe, given their experiences in two consecutive generations.
But, the Israeli jewish diaspora led to a cultural renaissance of American, and in particular western and southern European jewry.
The “first choice” of the refugees was almost always the English-speaking world of the United States, Canada, Britain and the Antipodes. But thriving communities were established in Cyprus, Turkey, Greece, Italy, Iran and France, which were originally seen as only a temporary refuge. By the end of the 1980s, there were even over half a million jews living in Germany and Austria, along with substantial communities in Britain, Scandinavia and the Low Countries.
The countries of western Europe and America did not shut their doors this time, in the prosperous 1960s, so despite Middle East tragedy we can say there was some progress of civilization in the North Atlantic world at least.
Furthermore the arrival of Israeli refugees added to the distinctive jewish identity of the jews in Europe, whose small surviving communities (mainly in France and Britain and Switzerland) had been very assimilated and low-key.
Of course now, in the 21st century, when the biggest lament of jewish clergy and cultural figures is assimilation, most dramatically expressed in the over 50% rate of marrying or cohabiting outside the jewish faith, it is easy to forget the wide effects of the new diaspora on Western and Southern European music, fashion, cuisine (especially fast food shawarma and couscous) and cinema (the revival of the action/adventure genre owed so much to Israeli born directors; remember some of the biggest hits were in the sub-category of “latke westerns” filmed in Italy, Turkey and Iran.)
Also, although its hard to imagine it now given the Iranian monarchy’s power and prestige, but the 1970s were turbulent times for Iran with many riots and campaigns by violent leftist and reactionary movements. The Maccabean guard were key shock troops, along with Savak, in stiffening the Iranian military and quelling disorders.