Due to the unresolved debate concerning the nature of Zionism - just wanted to cite the Britannica on the subject. [Prof Yosef Salmon's article also indicates the complexity of the issue]
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Jewish nationalist movement that has had as its goal the creation and support of a Jewish national state in Palestine, the ancient homeland of the Jews (Hebrew: Eretz Yisraʾel, “the Land of Israel”). Though Zionism originated in eastern and central Europe in the latter part of the 19th century, it is in many ways a continuation of the ancient nationalist attachment of the Jews and of the Jewish religion to the historical region of Palestine, where one of the hills of ancient Jerusalem was called Zion.
In the 16th and 17th centuries a number of “messiahs” came forward trying to persuade Jews to “return” to Palestine. The Haskala (“Enlightenment”) movement of the late 18th century, however, urged Jews to assimilate into Western secular culture. In the early 19th century interest in a return of the Jews to Palestine was kept alive mostly by Christian millenarians. Despite the Haskala, eastern European Jews did not assimilate and in reaction to tsarist pogroms formed the Ḥovevei Ẕiyyon (“Lovers of Zion”) to promote the settlement of Jewish farmers and artisans in Palestine.
A political turn was given to Zionism by Theodor Herzl, an Austrian journalist who regarded assimilation as most desirable but, in view of anti-Semitism, impossible to realize. Thus, he argued, if Jews were forced by external pressure to form a nation, they could lead a normal existence only through concentration in one territory. In 1897 Herzl convened the first Zionist Congress at Basel, Switz., which drew up the Basel program of the movement, stating that “Zionism strives to create for the Jewish people a home in Palestine secured by public law.”
The centre of the movement was established in Vienna, where Herzl published the official weekly Die Welt (“The World”). Zionist congresses met yearly until 1901 and then every two years. When the Ottoman government refused Herzl's request for Palestinian autonomy, he found support in Great Britain. In 1903 the British government offered 6,000 square miles (15,500 square km) of uninhabited Uganda for settlement, but the Zionists held out for Palestine.
At the death of Herzl in 1904, the leadership moved from Vienna to Cologne, then to Berlin. Prior to World War I Zionism represented only a minority of Jews, mostly from Russia but led by Austrians and Germans. It developed propaganda through orators and pamphlets, created its own newspapers, and gave an impetus to what was called a “Jewish renaissance” in letters and arts. The development of the Modern Hebrew language largely took place during this period.
The failure of the Russian Revolution of 1905 and the wave of pogroms and repressions that followed caused growing numbers of Russian Jewish youth to emigrate to Palestine as pioneer settlers. By 1914 there were about 90,000 Jews in Palestine; 13,000 settlers lived in 43 Jewish agricultural settlements, many of them supported by the French Jewish philanthropist Baron Edmond de Rothschild.
Upon the outbreak of World War I political Zionism reasserted itself, and its leadership passed to Russian Jews living in England. Two such Zionists, Chaim Weizmann and Nahum Sokolow, were instrumental in obtaining the Balfour Declaration from Great Britain (Nov. 2, 1917), which promised British support for the creation of a Jewish national home in Palestine. The declaration was included in Britain's League of Nations mandate over Palestine (1922).