The Fourth International (FI) was a political international established in France in 1938 by Leon Trotsky and his supporters, having been expelled from the Soviet Union and the Communist International.
The Communist Party of Great Britain is a political group which publishes the Weekly Worker newspaper. The CPGB (PCC) claims to have "an internationalist duty to uphold the principle, 'One state, one party'. To the extent that the European Union becomes a state then that necessitates EU-wide trade unions and a Communist Party of the EU". In addition, it is in favour of the unification of the entire working class under a new Communist International. It is not to be confused with the former Communist Party of Great Britain, the Communist Party of Great Britain (Marxist–Leninist), or the current Communist Party of Britain.
The New Communist Party of Britain is an anti-revisionist Marxist–Leninist communist party in Britain. The origins of the NCP lie in the Communist Party of Great Britain from which it split in 1977. The organisation takes an anti-revisionist stance on Marxist–Leninism and is opposed to Eurocommunism. After the fall of the Soviet Union the party was one of two original British signatories to the Pyongyang Declaration in 1992. It publishes a newspaper named The New Worker.
The Worker-communist Party of Iran is a political party founded in 1991 that seeks the overthrow of the Islamic Republic of Iran and the establishment of a Socialist Republic in its place. The party's primary slogans are "Liberty, Equality, Workers' Rule", "Down with the Islamic Republic", "For a Socialist Republic" and "The Basis of Socialism is the Human Being".
The Communist Party (British Section of the Third International) was a Left Communist organisation established at an emergency conference held on 19–20 June 1920 at the International Socialist Club in London. It comprised about 600 people.
The Right Opposition or Right Tendency in the All-Union Communist Party (Bolsheviks) was a label formulated by Joseph Stalin in autumn of 1928 for the opposition against certain measures included within the first five-year plan, an opposition which was led by Nikolai Bukharin, Alexei Rykov, Mikhail Tomsky, and their supporters within the Soviet Union that did not follow the so-called "general line of the party". It is also the name given to "right-wing" critics within the Communist movement internationally, particularly those who coalesced in the International Communist Opposition, regardless of whether they identified with Bukharin and Rykov.
The Revolutionary Socialist League (RSL) was a Trotskyist group in the United States established in 1973 and disbanded in 1989.
The Communist Workers' Party of Germany was an anti-parliamentarian and left communist party that was active in Germany during the Weimar Republic. It was founded in 1920 in Heidelberg as a split from the Communist Party of Germany (KPD). Originally the party remained a sympathising member of Communist International. In 1922, the KAPD split into two factions, both of whom kept the name, but are referred to as the KAPD Essen Faction and the KAPD Berlin Faction.
The Communist Workers' Organisation (CWO) is a British left communist group, founded in 1975, and an affiliate of the Internationalist Communist Tendency, formerly the International Bureau for the Revolutionary Party. It publishes a quarterly magazine called Revolutionary Perspectives and distributes the agitational broadsheet Aurora. Works of the CWO and ICT have been cited in various academic and political sources internationally, across several countries and languages. The organisation has its origins in north England and Scotland, though it has since grown to encompass other areas with members and sympathisers across the world.
The Revolutionary Democratic Group (RDG) was a socialist organisation in the United Kingdom. It was founded in the early 1980s in a split from London and Scottish branches of the Socialist Workers Party, of which, for many years, it considered itself an "external faction".
The International Marxist Group (IMG) was a Trotskyist group in Britain between 1968 and 1982. It was the British Section of the Fourth International. It had around 1,000 members and supporters in the late 1970s. In 1980, it had 682 members; by 1982, when it changed its name to the Socialist League, membership had fallen to 534.
The International Communist Current (ICC) is a left communist international organisation. It was founded at a conference in January 1975 where it was established as a centralised organisation with sections in France, Britain, Spain, United States, Italy, and Venezuela. It would go on to establish sections in Belgium, Germany, Netherlands, Sweden, India, Turkey, Philippines, Brazil, Peru, Ecuador and Mexico. The ICC published the first issue of its theoretical journal International Review in April 1975 and since then has published it quarterly, mainly in English, French and Spanish.
The Fourth International (FI), founded in 1938, is a Trotskyist international.
The International Communist League (Fourth Internationalist) abbreviated as ICL(FI), earlier known as the international Spartacist tendency (iSt) is a Trotskyist international. Its largest constituent party is the Spartacist League (US). There are smaller sections of the ICL (FI) in Mexico, Canada, France, Germany, Ireland, Italy, Japan, South Africa, Australia, Greece and the United Kingdom.
Left communism, or the communist left, is a position held by the left wing of communism, which criticises the political ideas and practices espoused by Marxist–Leninists and social democrats. Left communists assert positions which they regard as more authentically Marxist than the views of Marxism–Leninism espoused by the Communist International after its Bolshevization by Joseph Stalin and during its second congress.
The Socialist Workers Party (SWP) is a far-left political party in the United Kingdom. Founded as the Socialist Review Group by supporters of Tony Cliff in 1950, it became the International Socialists in 1962 and the SWP in 1977. The party considers itself to be Trotskyist. Cliff and his followers criticised the Soviet Union and its satellites, calling them state capitalist rather than socialist countries.
The Workers Revolutionary Party (WRP) is a Trotskyist group in Britain once led by Gerry Healy. In the mid-1980s, it split into several smaller groups, one of which retains possession of the name.
The Alliance for Workers' Liberty (AWL), also known as Workers' Liberty, is a Trotskyist group in Britain and Australia, which has been identified with the theorist Sean Matgamna throughout its history. It publishes the newspaper Solidarity.
The Revolutionary Communist International (RCI) is a Trotskyist political international. It was founded as the Committee for a Marxist International by British-based South African political theorist Ted Grant and his supporters after they broke with the Committee for a Workers' International in 1992, and was subsequently renamed the International Marxist Tendency (IMT) in 2004 before adopting its current name in June 2024. The organization's website, Marxist.com or In Defence of Marxism, is edited by Alan Woods. The site is multilingual, and publishes international current affairs articles written from a Marxist perspective, as well as many historical and theoretical articles.
