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The Socialist International (SI) is a worldwide organisation of political parties which seek to establish
democratic socialism Democratic socialism is a political philosophy Political philosophy or political theory is the philosophical Philosophy (from , ) is the study of general and fundamental questions, such as those about existence Existence is the ab ...
. It consists mostly of democratic socialist,
social-democratic Social democracy is a Political philosophy, political, Social philosophy, social, and economic philosophy within socialism that supports Democracy, political and economic democracy. As a policy regime, it is described by academics as advocatin ...
and
labour Labour or labor may refer to: * Childbirth Childbirth, also known as labour or delivery, is the ending of pregnancy where one or more babies leaves the uterus by passing through the vagina or by Caesarean section. In 2015, there were about 13 ...
political parties and other organisations. Although formed in 1951 as a successor to the
Labour and Socialist International The Labour and Socialist International (LSI; german: Sozialistische Arbeiter-Internationale, label=German German(s) may refer to: Common uses * of or related to Germany * Germans, Germanic ethnic group, citizens of Germany or people of German ...
, it has antecedents in the late 19th century. The organisation currently includes 147 member parties and organisations from over 100 countries. Its members have governed in many countries, including most of Europe. The current secretary general of the SI is (Chile) and the current president of the SI is the former
Prime Minister of Greece The prime minister of the Hellenic Republic ( el, Πρωθυπουργός της Ελληνικής Δημοκρατίας, Prothypourgós tis Ellinikís Dimokratías), colloquially referred to as the prime minister of Greece ( el, Πρωθυπ ...
,
George Papandreou George Andreas Papandreou ( el, Γεώργιος Ανδρέας Παπανδρέου, , shortened to ''Giorgos'' () to distinguish him from Georgios Papandreou, his grandfather; born 16 June 1952) is a Greeks, Greek politician who served as Prim ...

George Papandreou
, both of whom were re-elected at the last SI Congress held in Cartagena, Colombia in March 2017.


History


First and Second Internationals (1864–1916)

The
International Workingmen's Association 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 Socialism is a Political philosoph ...
, also known as the First International, was the first international body to bring together organisations representing the
working class The working class (or labouring class) comprises those engaged in manual-labour occupations or industrial work, who are remunerated via waged or salaried contracts. Working-class occupations (see also "Designation of workers by collar color ...
. It was formed in
London London is the capital Capital most commonly refers to: * Capital letter Letter case (or just case) is the distinction between the letters that are in larger uppercase or capitals (or more formally ''majuscule'') and smaller lowerc ...

London
on 28 September 1864 by socialist, communist and anarchist political groups and trade unions. Tensions between moderates and revolutionaries led to its dissolution in 1876 in
Philadelphia Philadelphia (colloquially known simply as Philly) is the largest city in the Commonwealth A commonwealth is a traditional English term for a political community founded for the common good In philosophy Philosophy (from , ) is ...

Philadelphia
. The
Second International The Second International (1889–1916) was an organisation of workers' movement, socialist and labour parties, formed on 14 July 1889 at two simultaneous Paris meetings in which delegations from twenty countries participated. The Second Internat ...
was formed in Paris on 14 July 1889 as an association of the socialist parties. Differences over
World War I World War I, often abbreviated as WWI or WW1, also known as the First World War or the Great War, was a global war A world war is "a war engaged in by all or most of the principal nations of the world". The term is usually reserved for ...

World War I
led to the Second International being dissolved in 1916.


Labour and Socialist International (1919–1940)

The
International Socialist Commission : The International Socialist Commission, also known as the International Socialist Committee or the Berne International was a coordinating committee of socialists parties that adhered to the idea of the Zimmerwald Conference The Zimmerwald Conf ...
(ISC), also known as the Berne International, was formed in February 1919 at a meeting in
Bern ,german: Berner(in),french: Bernois(e), it, Bernese , neighboring_municipalities = Bremgarten bei Bern Bremgarten bei Bern is a municipality A municipality is usually a single administrative division having Municipal corporation, corpor ...

Bern
by parties that wanted to resurrect the Second International. In March 1919, Communist parties formed the
Communist International The Communist International (Comintern), also known as the Third International, was an international organization founded in 1919 that advocated world communism, headed by the Soviet Union. The Comintern resolved at its Second Congress to "str ...
("Comintern"), the Third International, at a meeting in Moscow. Some parties did not want to be a part of the resurrected Second International (ISC) or Comintern. They formed the
International Working Union of Socialist Parties The International Working Union of Socialist Parties (IWUSP; also known as the International or the Vienna International; german: Internationale Arbeitsgemeinschaft Sozialistischer Parteien, IASP) was a political international for the co-operation ...
(IWUSP, also known as Vienna International, Vienna Union, or Two-and-a-Half International) on 27 February 1921 at a conference in
Vienna Vienna ( ; german: Wien ; bar, Wean, label=Bavarian language, Austro-Bavarian ) is the Capital city, national capital, largest city, and one of States of Austria, nine states of Austria. Vienna is Austria's List of cities and towns in Austria, mos ...

Vienna
. The ISC and the IWUSP joined to form the
Labour and Socialist International The Labour and Socialist International (LSI; german: Sozialistische Arbeiter-Internationale, label=German German(s) may refer to: Common uses * of or related to Germany * Germans, Germanic ethnic group, citizens of Germany or people of German ...
(LSI) in May 1923 at a meeting in
Hamburg en, Hamburgian(s) , timezone1 = Central (CET) , utc_offset1 = +1 , timezone1_DST = Central (CEST) , utc_offset1_DST = +2 , postal_code_type = Post ...

Hamburg
. The rise of
Nazism Nazism ( ), officially National Socialism (german: Nationalsozialismus, ), is the ideology An ideology () is a set of belief A belief is an Attitude (psychology), attitude that something is the case, or that some proposition about th ...

Nazism
and the start of
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a global war A world war is "a war War is an intense armed conflict between states State may refer to: Arts, entertainment, and media Literatur ...
led to the dissolution of the LSI in 1940.


Socialist International (1951–present)

The Socialist International was formed in
Frankfurt Frankfurt, officially Frankfurt am Main (; Hessian dialects, Hessian: , "Franks, Frank ford (crossing), ford on the Main (river), Main"; french: Francfort-sur-le-Main), is the most populous city in the States of Germany, German state of Hess ...

Frankfurt
in July 1951 as a successor to the LSI. During the post-
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a global war A world war is "a war War is an intense armed conflict between states State may refer to: Arts, entertainment, and media Literatur ...
period, the SI aided social democratic parties in re-establishing themselves when dictatorship gave way to democracy in Portugal (1974) and Spain (1975). Until its 1976 Geneva Congress, the SI had few members outside Europe and no formal involvement with
Latin America * ht, Amerik Latin, link=no * pt, América Latina, link=no , image = Latin America (orthographic projection).svg , area = , population = ( est.) , density = , ethnic_groups = , ethnic_groups_year = 2018 , ethnic ...

Latin America
. In the 1980s, most SI parties gave their backing to the Nicaraguan Sandinistas (FSLN), whose democratically elected
left-wing Left-wing politics support social equality Social equality is a state of affairs in which all people within a specific society A society is a Social group, group of individuals involved in persistent Social relation, social in ...
government was subject to a campaign to overthrow it backed by the
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

United States
, which culminated in the
Iran–Contra affair The Iran–Contra affair ( fa, ماجرای ایران-کنترا, es, Caso Irán–Contra), often referred to as the Iran–Contra scandal, the McFarlane affair (in Iran), or simply Iran–Contra, was a political scandal in the United States ...
after the
Reagan administration The presidency of Ronald Reagan began at noon EST (17:00 UTC) on January 20, 1981, when Ronald Reagan Ronald Wilson Reagan ( ; February 6, 1911June 5, 2004) was an American politician who served as the 40th president of the United S ...
covertly continued US support for the
Contras The Contras were the various U.S.-backed and funded right-wing Right-wing politics embraces the view that certain social orders and Social stratification, hierarchies are inevitable, natural, normal, or desirable, typically supporting thi ...
after such support was banned by
Congress Congresses are formal meetings of the representatives of different countries A country is a distinct territorial body or political entity A polity is an identifiable political entity—any group of people who have a collective identity, ...

Congress
. In the late 1970s and in the 1980s the SI had extensive contacts and discussion with the two leading powers of the
Cold War The Cold War was a period of geopolitical Geopolitics (from Greek#REDIRECT Greek Greek may refer to: Greece Anything of, from, or related to Greece Greece ( el, Ελλάδα, , ), officially the Hellenic Republic, is a country loc ...
period, the
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

United States
and the
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a that spanned during its existence from 1922 to 1991. It was nominally a of multiple national ; in practice and were highly until its final years. The ...
, on issues concerning East–West relations and arms control. The SI supported
détente and Raúl Castro Raúl Modesto Castro Ruz (; ; born 3 June 1931) is a Cuban retired politician who served as the first secretary of the Communist Party of Cuba, the most senior position in the one-party A one-party state, single-part ...
and disarmament agreements, such as
SALT Salt is a mineral In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid chemical compound with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure fo ...
II,
START Start can refer to multiple topics: *Takeoff Takeoff is the phase of flight Flight or flying is the process by which an object (physics), object motion (physics), moves through a space without contacting any planetary surface, either wi ...
and INF. They had several meetings and discussion in
Washington, D.C. ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument The Washington Monument is an obelisk within the National Mall The National Mall is a Landscape architecture, landscaped ...
with
President President most commonly refers to: *President (corporate title) A president is a leader of an organization, company, community, club, trade union, university or other group. The relationship between a president and a Chief Executive Officer, chi ...

President
Jimmy Carter James Earl Carter Jr. (born October 1, 1924) is an American politician, businessman, and philanthropist who served as the 39th president of the United States from 1977 to 1981. A member of the Democratic Party (United States), Democratic Par ...

Jimmy Carter
and
Vice-President A vice president (in British English: vice-president for governments and director for businesses) is an officer in government A government is the system or group of people governing an organized community, generally a State (polity), ...
George Bush
George Bush
and in
Moscow Moscow ( , American English, US chiefly ; rus, links=no, Москва, r=Moskva, p=mɐˈskva, a=Москва.ogg) is the Capital city, capital and List of cities and towns in Russia by population, largest city of Russia. The city stands on the ...

Moscow
with Secretaries General
Leonid Brezhnev Leonid Ilyich Brezhnev (; rus, links= no, Леонид Ильич Брежнев, p= lʲɪɐˈnʲit ɨˈlʲjidʑ ˈbrʲeʐnʲɪf, a= Ru-Leonid Ilich Brezhnev.ogg; uk, links= no, Леонід Ілліч Брежнєв, 19 December 1906  ...
and
Mikhail Gorbachev Mikhail Sergeyevich Gorbachev (born 2 March 1931) is a Russian and former Soviet politician, lawyer, and statesman. The List of leaders of the Soviet Union, eighth and final leader of the Soviet Union, he was the General Secretary of the ...

Mikhail Gorbachev
. The SI's delegations to these discussions were led by the
Finnish Prime Minister The prime minister of Finland ( fi, Suomen pääministeri, literally main minister or head minister, , literally minister of state Minister of State is a title borne by politicians or officials in certain countries governed under a parliame ...
Kalevi Sorsa Taisto Kalevi Sorsa (21 December 1930 – 16 January 2004) was a Finland, Finnish politician who served as Prime Minister of Finland three times: 1972–1975, 1977–1979 and 1982–1987. At the time of his death he still held the record for m ...

Kalevi Sorsa
. Since then, the SI has admitted as members an increasing number of parties and organisations from Africa, Asia, Europe and Latin America (see below for current list). Following the
Tunisian Revolution The Tunisian Revolution, also called the Jasmine Revolution, was an intensive 28-day campaign of civil resistance. It included a series of street demonstrations which took place in Tunisia ) , image_map = Tunisia location (orthographic pr ...
, the
Constitutional Democratic Rally The Democratic Constitutional Rally or Democratic Constitutional Assembly ( ar, التجمع الدستوري الديمقراطي ', french: Rassemblement Constitutionnel Démocratique, sometimes also called Constitutional Democratic Rally in En ...
was expelled from the SI in January 2011; later that month the
Egypt Egypt ( ar, مِصر, Miṣr), officially the Arab Republic of Egypt, is a transcontinental country This is a list of countries located on more than one continent A continent is one of several large landmasses. Generally identi ...

Egypt
ian National Democratic Party was also expelled; and as a result of the
2010–2011 Ivorian crisis The 2010–11 Ivorian crisis was a political crisis in Ivory Coast Ivory Coast, also known as Côte d'Ivoire, officially the Republic of Côte d'Ivoire, is a country located on the south coast of West Africa West Africa or Western Afri ...
, the
Ivorian Popular Front The Ivorian Popular Front (french: Front populaire ivoirien; Abbreviation, abbr. FPI) is a centre-left, democratic socialist and social democratic political party in Ivory Coast. FPI was founded in exile in 1982 by history professor Laurent Gbagb ...
was expelled in March 2011, in accordance with section 7.1 of the statutes of the Socialist International. These decisions were approved at the subsequent SI Congress in Cape Town in 2012 in line with section 5.1.3 of the statutes.


Progressive Alliance split (2013)

On 22 May 2013 the SPD along with some other current and former member parties of the SI founded a rival international network of social-democratic parties known as the
Progressive Alliance The Progressive Alliance (PA) is a political international of Social democracy, social democratic and Progressivism, progressive political parties and organisations founded on 22 May 2013 in Leipzig, Germany. The alliance was formed as an alte ...

Progressive Alliance
, citing their perceived undemocratic and outmoded nature of the SI, as well as the Socialist International's admittance and continuing inclusion of undemocratic political movements into the organization. After the 2012 Congress, the SI underwent major changes as many of the large European parties allowed their membership to lapse - for example the Social Democratic Party of Germany (SPD) and the Swedish Social Democratic Labour Party - or downgraded their membership to observer status - for example, the British Labour Party and the Norwegian Labour Party (DNA). These parties now concentrate their international links on the Progressive Alliance, with the SI's focus now increasingly being on the global south.


Relationship with Latin America

For a long time, the Socialist International remained distant from Latin America, considering the region as a zone of influence of the
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

United States
. For example, it did not denounce the
coup d'état A coup d'état (; French for "blow of state"), often shortened to coup in English, (also known as an overthrow) is a seizure and removal of a government and its powers. Typically, it is an illegal, unconstitutional seizure of power by a politic ...
against Socialist President
Jacobo Árbenz Juan Jacobo Árbenz Guzmán (; 14 September 191327 January 1971) was a Guatemalan military officer and politician who served as the 25th President of Guatemala. He was Ministry of Defence (Guatemala), Minister of National Defense from 1944 to 19 ...
in Guatemala in 1954 or the invasion of the Dominican Republic by the United States in 1965. It was not until the
1973 Chilean coup d'état The 1973 Chilean coup d'état was a military coup in Chile Chile, officially the Republic of Chile, is a country in the western part of South America South America is a entirely in the and mostly in the , with a relatively ...
that we discovered "a world we did not know", explains Antoine Blanca, a diplomat for the French PS. According to him, solidarity with the Chilean left was "the first challenge worthy of the name, against Washington, of an International which, until then, had done everything to appear subject to American strategy and NATO". Subsequently, notably under the leadership of
François Mitterrand François Marie Adrien Maurice Mitterrand (26 October 19168 January 1996) was a French statesman who served as President of France The president of France, officially the President of the French Republic (french: Président de la Républiqu ...
, the SI supported the
Sandinistas The Sandinista National Liberation Front ( es, Frente Sandinista de Liberación Nacional, FSLN) is a Socialism, socialist political party in Nicaragua. Its members are called Sandinistas in both English and Spanish. The party is named after Au ...
in Nicaragua and other movements in El Salvador, Guatemala and Honduras in their struggle against US-supported dictatorships. In the 1990s, it was joined by non-socialist parties that took note of the economic power of the European countries governed or to be governed by their partners across the Atlantic and calculated the benefits they could derive from it. During this period, "the socialist international works in a clientist way; some parties come here to rub shoulders with Europeans as if they were in the upper class," says Porfirio Muñoz Ledo, one of the representatives of the
Party of the Democratic Revolution The Party of the Democratic Revolution (PRD, es, Partido de la Revolución Democrática, ) is a social democratic Social democracy is a political Politics (from , ) is the set of activities that are associated with Decision-making, maki ...
(Mexico) at the SI. It is home to "the very centrist Argentinean
Radical Civic Union The Radical Civic Union ( es, Unión Cívica Radical, UCR) is a centrist Social liberalism, social-liberal political party in Argentina. The party has been ideologically heterogeneous, ranging from social liberalism to social democracy. The UCR i ...
(UCR); the Mexican
Institutional Revolutionary Party The Institutional Revolutionary Party ( es, Partido Revolucionario Institucional, ; abbr. PRI) is a political party in Mexico that was founded in 1929 and held uninterrupted power in the country for 71 years, from 1929 to 2000, first as the Nati ...
(PRI), which was not very democratically in power for seventy years; the
Colombian Liberal Party The Colombian Liberal Party ( es, Partido Liberal Colombiano; PLC) is a centre-left political party in Colombia. It was founded as a classical liberalism, classical liberal party but later developed a more social-democratic tradition, joining t ...
—under whose governments the left-wing formation Patriotic Union (1986–1990) was exterminated—introduced the neoliberal model (1990–1994) and to which, until 2002,
Álvaro Uribe Álvaro Uribe Vélez (born 4 July 1952) is a Colombian politician A politician is a person active in party politics, or a person holding or seeking an elected legal seat, seat in government. Politicians propose, support, and create laws tha ...
will belong". In the following decade, many left-wing parties that came to power (in Brazil, Venezuela, Bolivia, Ecuador and El Salvador) preferred to keep their distance from the SI.


Presidents, honorary presidents and secretaries general


Presidents

*, there have been a total of 8 Socialist International presidents. *


Honorary presidents

Current and honorary presidents include: *
Pierre Mauroy Pierre Mauroy (; 5 July 1928 – 7 June 2013) was a French Socialist Socialism is a political Politics (from , ) is the set of activities that are associated with Decision-making, making decisions in Social group, groups, or other forms ...
, former president of the SI *
Mustapha Ben Jafar Mustapha Ben Jafar ( ar, مصطفى بن جعفر) (born 8 December 1940) is a Tunisian politician and medical doctor who was Speaker of the Constituent Assembly of Tunisia from November 2011 to December 2014. He founded and has led the Democratic ...
, Tunisia *
Leonel Brizola Leonel de Moura Brizola (22 January 1922 – 21 June 2004) was a Brazilian politician. Launched in politics by Brazilian president President most commonly refers to: *President (corporate title) A president is a leader of an organization, co ...

Leonel Brizola
, Brazil * Rubén Berríos, Puerto Rico *
Philippe Busquin Philippe Busquin (born 6 January 1941) is a Belgian politician. Busquin was born in Feluy. He was a Member of the European Parliament A Member of the European Parliament (MEP) is a person who has been elected to serve as a popular repr ...
, Belgium *, Mexico * Mohamed El Yazghi, Morocco *
Alan García Alan Gabriel Ludwig García Pérez (; 23 May 1949 – 17 April 2019) was a Peruvian Peruvians ( es, Peruanos) are people identified with the country of Peru. There were Andean and Coastal Ancient civilizations like Caral, the oldest civili ...
, Peru * Anita Gradin, Sweden *
Elazar Granot Elazar Granot ( he, אלעזר גרנות, 12 March 1927 – 19 September 2013) was an Israeli politician and a writer. Biography Born in Jerusalem during the Mandatory Palestine, Granot was educated at Pardes Hanna Agricultural High School, befo ...
, Israel *
Tarja Halonen Tarja Kaarina Halonen (; born 24 December 1943) is a Finns, Finnish politician who served as the 11th President of Finland, and the first woman to hold the position, from 2000 to 2012. She first rose to prominence as a lawyer with the Central Orga ...
, Finland *
Mahamadou Issoufou Mahamadou Issoufou (born 1 January 1952) is a Nigerien politician who served as the President of Niger from 7 April 2011 to 2 April 2021. Issoufou was the Heads of Government of Niger, prime minister of Niger from 1993 to 1994, President of the Na ...
, Niger * Anker Jørgensen, Denmark *
Lionel Jospin Lionel Robert Jospin (; born 12 July 1937) is a French politician who served as Prime Minister of France The prime minister of France (french: link=no, Premier ministre français), officially the prime minister of the French Republic, is the ...
, France *
Neil Kinnock Neil Gordon Kinnock, Baron Kinnock (born 28 March 1942) is a Welsh politician. As a member of the Labour Party Labour Party or Labor Party may refer to: Angola *MPLA, known for some years as "Popular Movement for the Liberation of Angola – ...
, Great Britain *
Horacio Serpa Horacio Serpa Uribe (4 January 1943 – 31 October 2020) was a Colombian lawyer, politician and Senator. Serpa ran as the Colombian Liberal Party candidate for President on three occasions; in 1998, 2002, and 2006. He previously served as ...
, Colombia *, Chile *
Mário Soares Mário Alberto Nobre Lopes Soares, Order of the Tower and Sword, GColTE, Order of Christ (Portugal), GCC, Order of Liberty, GColL (; 7 December 1924 – 7 January 2017) was a Portugal, Portuguese politician, who served as Prime Minister of Port ...

Mário Soares
, Portugal *
Hans-Jochen Vogel Hans-Jochen Vogel (3 February 192626 July 2020) was a German lawyer and a politician for the Social Democratic Party The name Social Democratic Party or Social Democrats has been used by many Political party, political parties in various co ...
, Germany *


Secretaries general

*
Julius Braunthal Julius Braunthal (1891–1972) was an Austrian-born Jewish historian, magazine editor, and political activist. Braunthal is best remembered as the Secretary of the Socialist International from 1951 to 1956 and for his massive three volume ''History ...
, Austria (1951–1956) *Bjarne Braatoy, Norway (1956–1957) *Albert Carthy, Great Britain (1957–1969) * Hans Janitschek, Austria (1969–1976) *
Bernt Carlsson Bernt Wilmar Carlsson (21 November 1938 – 21 December 1988) was a Swedish social democrat and diplomat who served as Assistant-Secretary-General of the United Nations and United Nations Commissioner for Namibia from July 1987 until he died on ...
, Sweden (1976–1983) * Pentti Väänänen, Finland (1983–1989) *, Chile (1989–present)


Summits

* I
Frankfurt Frankfurt, officially Frankfurt am Main (; Hessian dialects, Hessian: , "Franks, Frank ford (crossing), ford on the Main (river), Main"; french: Francfort-sur-le-Main), is the most populous city in the States of Germany, German state of Hess ...

Frankfurt
1951 * II
Milan Milan (, , Milanese: ; it, Milano ) is a city in northern Italy, capital of Lombardy, and the List of cities in Italy, second-most populous city proper in Italy after Rome. The city proper has a population of about 1.4 million, while its ...

Milan
1952 * III
Stockholm Stockholm (; ) is the capital Capital most commonly refers to: * Capital letter Letter case (or just case) is the distinction between the letters that are in larger uppercase or capitals (or more formally ''majuscule'') and smalle ...

Stockholm
1953 * IV
London London is the capital Capital most commonly refers to: * Capital letter Letter case (or just case) is the distinction between the letters that are in larger uppercase or capitals (or more formally ''majuscule'') and smaller lowerc ...

London
1955 * V
Vienna Vienna ( ; german: Wien ; bar, Wean, label=Bavarian language, Austro-Bavarian ) is the Capital city, national capital, largest city, and one of States of Austria, nine states of Austria. Vienna is Austria's List of cities and towns in Austria, mos ...

Vienna
1957 * VI
Hamburg en, Hamburgian(s) , timezone1 = Central (CET) , utc_offset1 = +1 , timezone1_DST = Central (CEST) , utc_offset1_DST = +2 , postal_code_type = Post ...

Hamburg
1959 * VII
Rome , established_title = Founded , established_date = 753 BC , founder = King Romulus , image_map = Map of comune of Rome (metropolitan city of Capital Rome, region Lazio, Italy).svg , map_caption = The te ...

Rome
1961 * VIII
Amsterdam Amsterdam (, , ) is the Capital of the Netherlands, capital and Municipalities of the Netherlands, most populous city of the Netherlands with a population of 872,680 within the city proper, 1,558,755 in the City Region of Amsterdam, urban ar ...

Amsterdam
1963 * IX
Brussels Brussels (french: Bruxelles or ; nl, Brussel ), officially the Brussels-Capital Region (All text and all but one graphic show the English name as Brussels-Capital Region.) (french: link=no, Région de Bruxelles-Capitale; nl, link=no, Brusse ...

Brussels
1964 * X
Stockholm Stockholm (; ) is the capital Capital most commonly refers to: * Capital letter Letter case (or just case) is the distinction between the letters that are in larger uppercase or capitals (or more formally ''majuscule'') and smalle ...

Stockholm
1966 * XI
Eastbourne Eastbourne () is a town and seaside resort in East Sussex East Sussex is a county in South East England on the English Channel The English Channel,, "The Sleeve"; nrf, la Maunche, "The Sleeve" ( Cotentinais) or (Jèrriais), (Guer ...

Eastbourne
1969 * XII
Vienna Vienna ( ; german: Wien ; bar, Wean, label=Bavarian language, Austro-Bavarian ) is the Capital city, national capital, largest city, and one of States of Austria, nine states of Austria. Vienna is Austria's List of cities and towns in Austria, mos ...

Vienna
1972 * XIII
Geneva , neighboring_municipalities= Carouge Carouge () is a Municipalities of Switzerland, municipality in the Canton of Geneva, Switzerland. History Carouge is first mentioned in the Early Middle Ages as ''Quadruvium'' and ''Quatruvio''. In 124 ...

Geneva
1976 * XIV
Vancouver Vancouver ( ) is a major city in western Canada Western Canada, also referred to as the Western Provinces and more commonly known as the West, is a region In geography Geography (from Greek: , ''geographia'', literally "earth desc ...

Vancouver
1978 * XV
Madrid Madrid ( , ) is the capital and most populous city of Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = , national_anthem = , image_ ...

Madrid
1980 * XVI
Albufeira Albufeira () is a city A city is a large human settlement.Goodall, B. (1987) ''The Penguin Dictionary of Human Geography''. London: Penguin.Kuper, A. and Kuper, J., eds (1996) ''The Social Science Encyclopedia''. 2nd edition. London: Routledge. ...
1983 * XVII
Lima Lima ( ; ) is the capital and the largest city of Peru , , image_flag = Flag_of_Peru.svg , image_coat = Escudo_nacional_del_Perú.svg , other_symbol = Great Seal of the State , other_symbol_t ...

Lima
1986 * XVIII
Stockholm Stockholm (; ) is the capital Capital most commonly refers to: * Capital letter Letter case (or just case) is the distinction between the letters that are in larger uppercase or capitals (or more formally ''majuscule'') and smalle ...

Stockholm
1989 * XIX
Berlin Berlin (; ) is the Capital city, capital and List of cities in Germany by population, largest city of Germany by both area and population. Its 3,769,495 inhabitants, as of 31 December 2019 makes it the List of cities in the European Union by ...

Berlin
1992 * XX
New York City New York, often called New York City to distinguish it from New York State New York is a state State may refer to: Arts, entertainment, and media Literature * ''State Magazine'', a monthly magazine published by the U.S. Department of ...

New York City
1996 * XXI
Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, most populous city of France, with an estimated population of 2,175,601 residents , in an area of more than . Since the 17th century, Paris ha ...

Paris
1999 * XXII
São Paulo São Paulo (, ; Portuguese for 'Saint Paul') is a city in the Southeast Region, Brazil, Southeast Region of Brazil. Listed by the Globalization and World Cities Research Network, GaWC as an global city, alpha global city, the Municipalities of ...

São Paulo
2003 * XXIII
Athens , image_skyline = File:Athens Montage L.png, center, 275px, alt=Athens montage. Clicking on an image in the picture causes the browser to load the appropriate article. rect 15 15 985 460 Acropolis of Athens rect 15 475 48 ...

Athens
2008 * XXIV
Cape Town Cape Town (Afrikaans: Kaapstad ; Xhosa language, Xhosa: ''iKapa;'') is the second-most populous city in South Africa, after Johannesburg, and also the legislative Capital city, capital of South Africa. Colloquially named the Mother City, it is ...

Cape Town
2012 *XXV
Cartagena Cartagena or Carthagena may refer to: Places Chile *Cartagena, Chile, a commune in Valparaíso Region Colombia *Cartagena, Colombia, a city in the Bolívar Department, the largest city with this name **Roman Catholic Archdiocese of Cartagena, an ...

Cartagena
2017


Members


Full members

The following parties are full members:


Consultative parties

The following parties are consultative parties:


Observer parties

The following parties are observer parties:


Former members


Fraternal organisations

*
International Falcon Movement – Socialist Educational International The International Falcon Movement – Socialist Educational International (IFM-SEI) is an international non-profit organisation based in Belgium that campaigns for children's rights. It is a fraternal organisation of Socialist International and wo ...
* Socialist International Women


Associated organisations


See also

*
French Section of the Workers' International The French Section of the Workers' International (french: Section française de l'Internationale ouvrière, SFIO) was a political party in France that was founded in 1905 and succeeded in 1969 by the modern-day Socialist Party Socialist Party is ...
*
Reformism Reformism is a political doctrine Doctrine (from la, doctrina, meaning "teaching, instruction") is a codification of beliefs or a body of teachings or instructions, taught principles A principle is a proposition or value that is a guide for ...


Notes


References

*


Further reading


''The Socialist International'' by Nikolai Sibilev, 1984.

''Social Democracy and Southern Africa'' by Vladimir Shubin (pseudonym of Vladimir Bushin), 1989.
* Julius Braunthal, "The Rebirth of Social Democracy," ''Foreign Affairs,'' vol. 27, no. 4 (July 1949), pp. 586–600
In JSTOR
* Pentti Vaananen, ''The Rose and the Fist,'' SYS Print, 2014, pp. 50–230.


External links

* {{authority control History of socialism Organisations based in the London Borough of Lambeth Political parties established in 1951 Political organisations based in London Political internationals Social democracy International Socialist Organisations 1951 establishments in Germany