The situation: a major antisemitic incident in a country with a large Jewish community has triggered a mass exodus by thousands of Jews fleeing to Israel. Hundreds of new immigrants arrive daily, seeking refuge and expecting to be swiftly absorbed and integrated into Israeli society. While the scenario is unlikely to occur in the near-term by all indications, it’s far from out of the question, and enough of a worrying eventuality that Israel’s Immigration and Absorption Ministry is drilling for what to do if — or when — it does happen. “This is an extreme scenario, but it’s not an...