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I’m going to try to analyze what Israeli strategy might look like if Obama were to be reelected. I don’t want to write a partisan piece — predicting every type of the most horrible disaster and open hatred from the White House — but a serious analytical effort. This involves speculation, but policymakers have to develop the most likely scenarios in order to plan ahead.

Let me start, though, with a joke. An asteroid hits the ocean, producing a giant tidal wave so powerful that within an hour all land will be covered by water. Television networks put on a variety of politicians, alleged wise people, and religious figures to speak with the doomed population. The rabbi among them explains: “All I can say is that you have one hour to learn to breathe...