The past week has turned us all into experts on Ukraine, now at the center of every conversation. Did you know how big it is? (When you lay it over the U.S. map, it stretches from New York to Chicago.) Who knew that we were actually using the Russian city names and not the Ukrainian ones (it's Kyiv, not Kiev; Lviv, not Lvov; and Kharkiv, not Kharkov). And their president -- did you know that he is Jewish? Volodymyr Zelensky is probably the most admired Jewish leader the world has to offer right now. Before entering politics in 2018, Zelensky was a popular comedian (and you can't get any more Jewish than that); he does not often speak about his Jewish identity, but he has never tried to hide it. In a country like Ukraine, which is still struggling with a painful legacy of antisemitism, Zelensky's Jewishness has always been present.