For Kissinger—still globe-trotting, still at work at Kissinger Associates most days, still social climbing—the startling opportunity at his advanced age was to become the key adviser to one of the most significant foreign policy players, perhaps the most significant foreign policy player, in the U.S. government. And the essential point, as Kissinger explained to friends, was that Kushner, with zero experience in international relations, was a blank slate.

