The greatest persisting mystery from the twentieth century is the career of Adolf Hitler and his “success” in leading his military and his “Volk” into the ultimate abyss of mass murder in the Holocaust. The impossible task of “explaining Hitler” was confronted by many and, in the consensual judgment of the historians, none came closer than Sir Ian Kershaw. Here is the full interview that I did with him after the publication of the second volume of his great study of this freakish figure who was at the center of unaccountable, ultimate evil.