Estonian Young Socialist League (in Estonian: Eesti Noorsotsialistlik Liit, abbreviated ENL) was a political youth movement in Estonia and the youth wing of the Estonian Socialist Workers Party (ESTP). A Central Bureau of ENL was set up in 1925. As of 1928, it had 20 branches with a total of around 500 members. [1]
Ideologically ENL was close to the Austro-Marxist positions. [2]
ENL published Rünnak, Igapäeva Rünnak and Sotsialistlik Võitlus. [2]
ENL was a member of the Socialist Youth International, the youth wing of the Labour and Socialist International. [3]
The Communist International (Comintern), also known as the Third International, was an international organization founded in 1919 that advocated world communism, and which was led and controlled by the Communist Party of the Soviet Union. The Comintern resolved at its Second Congress in 1920 to "struggle by all available means, including armed force, for the overthrow of the international bourgeoisie and the creation of an international soviet republic as a transition stage to the complete abolition of the state". The Comintern was preceded by the dissolution of the Second International in 1916. Vladimir Lenin and Leon Trotsky were both honorary presidents of the Communist International.
The Labour Party, formerly The Norwegian Labour Party, is a social democratic political party in Norway. It is positioned on the centre-left of the political spectrum, and is led by Jonas Gahr Støre. It is the senior party in a minority governing coalition with the Centre Party since 2021, with Støre serving as the current Prime Minister of Norway.
The Portuguese Socialist Party was a Portuguese political party.
Socialist Youth International was an international union of socialist youth organisations. It was founded in Hamburg 1923, through the merger of the Young Workers' International and the International Community of Socialist Youth Organisations. The formation of SYI was parallel to what of the Labour and Socialist International, and LSI and SYI were closely connected.
International Bureau of Revolutionary Youth Organizations was an international organization of socialist youth, formed in 1934. It functioned as the youth wing of the London Bureau.
The Social Democratic Labour Party of Norway was a Norwegian political party in the 1920s. Following the Labour Party's entry into the Comintern in 1919 its right wing left the party to form the Social Democratic Labour Party in 1921. At the party convention in 1923, however, the Labour Party withdrew from Comintern, and the Communist Party of Norway was formed by the minority, who continued its affiliation with Comintern and the Soviet Union until 1991. The Social Democratic Labour Party was absorbed into the reorganised Labour Party in 1927.

The Socialist Equality Party is a minor Trotskyist political party in Germany.
The Socialist International (SI) is a political international or worldwide organisation of political parties which seek to establish democratic socialism, consisting mostly of social democratic political parties and labour organisations.
Polish Socialist Workers Party was a political party in Czechoslovakia founded in February 1921, based amongst Polish workers. The party was active in trade union struggles, mainly mobilizing miners and workers in heavy industries. The chairman of the party was Emanuel Chobot. Other prominent members of the party were Antoni Steffek and Wiktor Sembol. The party closely cooperated with the Czechoslovak Social Democratic Party. The party published the newspaper Robotnik Śląski from Fryštát.
The German Socialist Labour Party of Poland was a political party organizing German Social Democrats in interbellum Poland.
The Czechoslovak Social Democratic Workers Party in the Republic of Austria was a political party in Austria, working amongst the Czech minority. The party was founded on December 7, 1919, as the Vienna branch of the Czechoslovak Social Democratic Workers Party separated itself from the party centre in Prague. The party worked closely together with the Social Democratic Workers Party of Austria (SDAPÖ), and cooperated with the Austrian Social Democrats on all political issues. The party contested parliamentary elections on joint lists together with SDAPÖ.
The Social Democratic Party of the Free City of Danzig was a political party in the Free City of Danzig. After the creation of the Free City of Danzig in 1919, the Danzig branch of the Social Democratic Party of Germany (SPD) separated itself from the party, and created the Social Democratic Party of the Free City of Danzig. The new party did however maintain close links with the SPD, and its political orientation was largely the same as that of the SPD.
The Socialist Party of Yugoslavia was a political party in the Kingdom of Yugoslavia. The party was founded on 18 December 1921 with Živko Topalović as the secretary and Vilim Bukšeg as the president of the party.
The Socialist Youth League of Yugoslavia was a youth organization in Yugoslavia, the youth wing of the Socialist Party of Yugoslavia. It was founded by the students circle in Zagreb in 1921. As of the late 1920s, they claimed to have around 1,500 members.
Joseph Kruk was a socialist and Jewish-nationalist activist from his youth in Russia and Poland, where he played a political role between-the-wars. In 1940 he saved his life moving from Poland to Eretz Israel. Utill his death he was known in Israel as a journalist.
The Bulgarian Social Democratic Workers Party (Broad Socialists) (Bulgarian: Българска работническа социалдемократическа партия (широки социалисти), Balgarska rabotnicheska sotsialdemokraticheska partiya (shiroki sotsialisti)) was a reformist socialist political party in Bulgaria. The party emerged from a division at the Tenth Party Congress of the Bulgarian Social Democratic Workers Party held in 1903 (the other faction forming the Bulgarian Social Democratic Workers' Party (Narrow Socialists)). The 'Broad Socialist' faction had appeared inside the pre-split party around 1900, when Yanko Sakazov had started the magazine Obshto delo ('Common Action'). The Broad Socialists, analogous to the Mensheviks in the Russian Social Democratic Labour Party, argued in favour a broad social base of the party and broad class alliances.
The Labour and Socialist International was an international organization of socialist and labourist parties, active between 1923 and 1940. The group was established through a merger of the rival Vienna International and the Berne International, and was the forerunner of the present-day Socialist International.
The International Union of Socialist Youth (IUSY) is an international youth labour organization, whose activities include publications, supporting member organizations and organization of meetings. Originally named the Socialist Youth International, the union was formed at the 1907 International Socialist Congress at Stuttgart as the youth wing of the Second International.
Poale Zion was a movement of Marxist–Zionist Jewish workers founded in various cities of Poland, Europe and the Russian Empire at about the turn of the 20th century after the Bund rejected Zionism in 1901.
The International Workingmen's Association (IWA), often called the First International (1864–1876), was an international organisation which aimed at uniting a variety of different left-wing socialist, social democratic, communist and anarchist groups and trade unions that were based on the working class and class struggle. It was founded in 1864 in a workmen's meeting held in St. Martin's Hall, London. Its first congress was held in 1866 in Geneva.