Commentary A Jewish Ukrainian family had four brothers. Three brothers were murdered by the Nazis. Only one survived. His grandson is the current president of Ukraine, Volodymyr Zelensky. The relationship between Ukraine and its Jewish community is a tragic one. From the pogroms that led to a mass exodus and migration of Jews out of Ukraine for over two centuries, much of it to North America, to the days of real Ukrainian support for Hitler’s Nazi’s Third Reich, there is a common saying in the Jewish community, whether in the Americas or in Israel, that every stone in Ukraine is drenched with Jewish blood. And yet, despite a history of horrors, a quarter million Jews have managed to survive and thrive in modern-day Ukraine. Now, its president, Volodymyr Zelensky, finds himself in a David vs. Goliath situation. With the equivalent of a 21st-century slingshot, he is facing the world’s most …