We learn from the Purim story that leadership can be thrust upon an individual in unanticipated ways. In Ukraine, we see that theme playing out in real time. When Ukrainians elected former comedian and entertainer Volodymyr Zelensky as their president in 2019, many around the world welcomed him despite his lack of government or leadership experience. There was also an element of pride among Jews because Zelensky is Jewish — even if that was not a defining aspect of his life before his entry into politics. Many wondered how Zelensky, who played the president of Ukraine for laughs on TV,...