 After World War I, Poale Zion published several pamphlets in Yiddish and a Yiddish journal, "Undzer Veg".Shlomo Kaplansky collaborated with the Independent Labour Party in setting up the Vienna International of socialist parties.In mid-1920, the World Union of Poale Zion in Vienna set up a Poale Zion office in London, led by Shlomo Kaplansky and David Ben-Gurion.