Back in 1961, when Hannah Arendt, the German-Jewish philosopher, reported on the trial in Israel of Adolf Eichmann, she was struck by his ordinariness and the “banality of evil.” He spoke and acted like anything but a monster — and yet he played a crucial role in one of history’s most monstrous crimes, the annihilation of Europe’s Jews in the Holocaust. Fast forward to Russia in 2022 for a look at today’s war criminals. Some, such as Russian dictator Vladimir Putin or Foreign Minister Sergei Lavrov, look like they would enjoy a bit of torture and rapine. Putin’s fish-like eyes...