For what the West stands against is terror—whether the terror of modern secular totalitarianism or the terror of an older, and now revitalized, religious fanaticism. From the Great Terrors of Stalin and Hitler to the attacks on New York and Tel Aviv, and on Madrid, Bali, and Mumbai, terrorists of all stripes know who their enemies are. They attack across the world and kill Jews, Christians, and Muslims alike—but they grasp that the centers of resistance, the nations that stand most squarely in their path, are the United States and Israel.

And so these two very different nations—Christian and Jewish, large and small, new world and old (though the new world nation is older than its newly reborn old world counterpart)—find themselves allied. More than allied: They find themselves joined at the hip in a brotherhood that is more than a diplomatic or political or military alliance. Everyone senses that the ties are deeper than those of mere allies. Israelis know that if the United States fails, so shall Israel. Americans sense, in the words of Eric Hoffer, “as it goes with Israel so will it go with all of us. Should Israel perish the holocaust will be upon us.”