League for the Fifth International
International grouping of revolutionary Trotskyist organisations
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The League for the Fifth International (L5I) is an international grouping of revolutionary Trotskyist organisations around a common programme and perspectives.
 Logo of the L5I | |
 Map of countries that have a member organization in the L5I | |
| Abbreviation | L5I |
|---|---|
| Merged into | International Socialist League |
| Formation | 1989 |
| Type | International league of Trotskyist organizations |
| Purpose | To form a new international organization of communist parties |
Main organ | Fifth International |
| Affiliations | Trotskyism |
| Website | fifthinternational |
History
L5I was founded in 1989 as the Movement for a Revolutionary Communist International. Its first members groups were Workers' Power in Britain, the Irish Workers Group, and Gruppe Arbeitermacht (GAM) in Germany.
In December 2025, L5I announced it had participated in the Third World Congress of the International Socialist League (LIS) and that they had agreed to join the LIS on the basis of a newly agreed common programme.[1]
Publications
The League publishes a quarterly English-language journal entitled Fifth International. The majority of writers for this appear to be from the British group, although other sections publish journals in their own languages. Revolutionärer Marxismus is the German-language journal. The League previously published the journal Permanent Revolution, a more theoretical journal which looked at tactics that communist organisations use, theories of imperialism, and similar questions. This was followed by Trotskyist International which, although still theoretical, also looked more at current affairs.[citation needed]
Member organisations
The L5I lists the following organisations as sections:[2]
| Country | Name | Misc. | Ref |
|---|---|---|---|
 Austria |
Arbeiter*innenstandpunkt | [3] | |
 Great Britain |
Workers' Power | Formerly Red Flag. Entered the Labour Party in 2015. | [4][5][6] |
 Germany |
Gruppe ArbeiterInnenmacht | Formerly Gruppe Arbeitermacht. | [7] |
 Pakistan |
Revolutionary Socialist Movement | [8] | |
 Sweden |
Arbetarmakt | [9] | |
 Switzerland |
Marxistische Aktion Schweiz | Formerly Gruppe Was Tun | [10] |
The L5I also has individual members in Ireland and Lebanon.[citation needed]
Groups that share a common history with L5I
| Country | Name | Misc. | Ref |
|---|---|---|---|
| Austria |
Der Neue Kurs | Split from Arbeiter*innenstandpunkt in 2006 | [11] |
 Brazil |
Liga Socialista | Appears to be defunct[citation needed] | [12] |
| Great Britain |
Permanent Revolution Tendency | Split from Workers' Power in 2006, dissolved in 2013 | [13] |
 Czech Republic |
Socialistická organizace pracujících | Appears to be defunct[citation needed] | [citation needed] |
 New Zealand |
Communist Workers' Group | Split from L5I in 1995 | [14] |
 Sri Lanka |
Socialist Party of Sri Lanka | Split from L5I in 2020 | [15] |
 Russia |
Movement Towards Socialism | [16] | |
 United States |
Workers Power USA | Appears to be defunct | [17] |