The decision by Prime Minister Benjamin Netanyahu to have the Israeli military capture Gaza City and then occupy all of Gaza is a bad idea. In fact, it is the worst possible idea — except for all the alternatives. These include letting Hamas keep power in Gaza endlessly and effectively consigning the remaining 20 living hostages to more torture and certain death. Another even worse possibility is that soft-headed Western leaders join the antisemites at the United Nations and reward Hamas’ terror campaign by making Gaza the centerpiece of a Palestinian state. Facing a global lineup of Jew haters, there...