With a spike in antisemitic incidents and statements, the Biden administration last week announced the establishment of a new inter-agency task-force to develop a national strategy to counter what has been called the world's oldest hatred. Indeed, what is needed is a comprehensive strategy, core to which is understanding the shifting nature of contemporary threats to Jews and to Judaism. Theodor Herzl, the visionary of the Jewish state, concluded in the 1890s that European opposition to Judaism is chronic and adjusts based on changing European and Jewish circumstances. Some in his time believed that since Europe is becoming increasingly secular,...