Theodor Herzl trained in law before turning toward literature and journalism. He wrote plays and essays and became Paris correspondent for Vienna's Neue Freie Presse in 1891. European antisemitism and the limits of assimilation increasingly shaped his political thinking. The Dreyfus Affair formed part of that environment, but the common claim that one episode alone abruptly created his Zionism oversimplifies its development and the evidence in his writings.

In The Jewish State, published in 1896, Herzl argued that the insecurity of Jews required a political solution secured by international agreement. He envisioned organized migration and institutions capable of establishing a recognized national home. His approach differed from simply encouraging scattered settlement; diplomacy and legal guarantees were central. The First Zionist Congress met at Basel in 1897, adopted a program seeking a publicly secured home for the Jewish people in Palestine, and created an organization with Herzl as its leading figure.

Herzl pursued support from powerful governments, meeting or negotiating with Ottoman, German, and British representatives. He sought a charter or other recognized framework rather than relying solely on private colonization. The negotiations produced few immediate successes, and relations within the movement could be difficult. His utopian novel Old-New Land, published in 1902, imagined technological development and social cooperation, including interaction between Jewish and Arab inhabitants.

A British proposal in 1903 for a settlement area in East Africa, often called the Uganda Scheme although the proposed region lay in present-day Kenya, divided Zionists. Herzl supported investigating it as a possible refuge amid persecution, while opponents feared abandonment of Palestine. He died in 1904 before the movement resolved many of these disputes. His diaries, correspondence, and organizational activity helped transform Zionism into an international political movement, though he was neither its first advocate nor the founder of an already existing state. The establishment of Israel came decades later through developments he could not direct. His remains were transferred to Jerusalem in 1949. His career's lasting importance rests on institution building, diplomatic strategy, and a powerful articulation of Jewish national aspirations, alongside continuing debate over how those aspirations related to other populations and competing claims.