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The Socialist International (SI) is a political international or worldwide organisation of political parties which seek to establish
democratic socialism Democratic socialism is a Left-wing politics, left-wing political philosophy that supports political democracy and some form of a socially owned economy, with a particular emphasis on economic democracy, workplace democracy, and workers' self- ...
. It consists mostly of
socialist Socialism is a left-wing economic philosophy and movement encompassing a range of economic systems characterized by the dominance of social ownership of the means of production as opposed to private ownership. As a term, it describes the e ...
and
labour Labour or labor may refer to: * Childbirth, the delivery of a baby * Labour (human activity), or work ** Manual labour, physical work ** Wage labour, a socioeconomic relationship between a worker and an employer ** Organized labour and the labour ...
-oriented political parties and 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, SAI) was an international organization of socialist and labour parties, active between 1923 and 1940. The group was established through a me ...
, it has antecedents in the late 19th century. The organisation currently includes 132 member parties and organisations from over 100 countries. Its members have governed in many countries, including most of Europe. In 2013, a schism in the SI led to the establishment of the Progressive Alliance. The current secretary general of the SI is Benedicta Lasi (Ghana) and the current president of the SI is the
prime minister of Spain The prime minister of Spain, officially president of the Government ( es, link=no, Presidente del Gobierno), is the head of government of Spain. The office was established in its current form by the Constitution of 1978 and it was first regula ...
,
Pedro Sánchez Pedro Sánchez Pérez-Castejón (; born 29 February 1972) is a Spanish politician who has been Prime Minister of Spain since June 2018. He has also been Secretary-General of the Spanish Socialist Workers' Party (PSOE) since June 2017, having pr ...
, both of whom were elected at the last SI Congress held in Madrid, Spain, in November 2022.


History


First and Second Internationals (1864–1916)

The International Workingmen's Association, 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 colou ...
. It was formed in
London London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary down to the North Sea, and has been a majo ...
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, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Sinc ...
. The
Second International The Second International (1889–1916) was an organisation of socialist and labour parties, formed on 14 July 1889 at two simultaneous Paris meetings in which delegations from twenty countries participated. The Second International continued th ...
was formed in Paris on 14 July 1889 as an association of the socialist parties. Differences over
World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
led to the Second International being dissolved in 1916.


Labour and Socialist International (1919–1940)

The International Socialist Commission (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, Frauenkappelen, Ittigen, Kirchlindach, Köniz, Mühleberg, Muri bei Bern, Neuenegg, Ostermundigen, Wohlen bei Bern, Zollikofen , website ...
by parties that wanted to resurrect the Second International. In March 1919, Communist parties formed the Communist International ("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 2½ International or the Vienna International; german: Internationale Arbeitsgemeinschaft Sozialistischer Parteien, IASP) was a political international for the co-opera ...
(IWUSP, also known as Vienna International, Vienna Union, or Two-and-a-Half International) on 27 February 1921 at a conference in
Vienna en, Viennese , iso_code = AT-9 , registration_plate = W , postal_code_type = Postal code , postal_code = , timezone = CET , utc_offset = +1 , timezone_DST ...
. 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, SAI) was an international organization of socialist and labour parties, active between 1923 and 1940. The group was established through a me ...
(LSI) in May 1923 at a meeting in
Hamburg (male), (female) en, Hamburger(s), Hamburgian(s) , timezone1 = Central (CET) , utc_offset1 = +1 , timezone1_DST = Central (CEST) , utc_offset1_DST = +2 , postal ...
. The rise of
Nazism Nazism ( ; german: Nazismus), the common name in English for National Socialism (german: Nationalsozialismus, ), is the far-right totalitarian political ideology and practices associated with Adolf Hitler and the Nazi Party (NSDAP) in Na ...
and the start of
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
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: , "Frank ford on the Main"), is the most populous city in the German state of Hesse. Its 791,000 inhabitants as of 2022 make it the fifth-most populous city in Germany. Located on its na ...
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 world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
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 Latin America or * french: Amérique Latine, link=no * ht, Amerik Latin, link=no * pt, América Latina, link=no, name=a, sometimes referred to as LatAm is a large cultural region in the Americas where Romance languages — languages derived f ...
. In the 1980s, most SI parties gave their backing to the Nicaraguan Sandinistas (FSLN), whose democratically elected
left-wing Left-wing politics describes the range of political ideologies that support and seek to achieve social equality and egalitarianism, often in opposition to social hierarchy. Left-wing politics typically involve a concern for those in soci ...
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 primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...
, which culminated in the Iran–Contra affair after the Reagan administration covertly continued US support for the
Contras The Contras were the various U.S.-backed and funded right-wing rebel groups that were active from 1979 to 1990 in opposition to the Marxist Sandinista Junta of National Reconstruction Government in Nicaragua, which came to power in 1979 fol ...
after such support was banned by
Congress A congress is a formal meeting of the representatives of different countries, constituent states, organizations, trade unions, political parties, or other groups. The term originated in Late Middle English to denote an encounter (meeting of a ...
. 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 is a term commonly used to refer to a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc. The term '' cold war'' is used because the ...
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 primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...
and the
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen national ...
, on issues concerning East–West relations and arms control. The SI supported
détente Détente (, French: "relaxation") is the relaxation of strained relations, especially political ones, through verbal communication. The term, in diplomacy, originates from around 1912, when France and Germany tried unsuccessfully to reduc ...
and disarmament agreements, such as
SALT Salt is a mineral composed primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of salts; salt in the form of a natural crystalline mineral is known as rock salt or halite. Salt is present in vast quantitie ...
II,
START Start can refer to multiple topics: *Takeoff, the phase of flight where an aircraft transitions from moving along the ground to flying through the air * Starting lineup in sports *Standing start, and rolling start, in an auto race Acronyms *St ...
and INF. They had several meetings and discussion in
Washington, D.C. ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, ...
with
President President most commonly refers to: *President (corporate title) *President (education), a leader of a college or university *President (government title) President may also refer to: Automobiles * Nissan President, a 1966–2010 Japanese ful ...
Jimmy Carter James Earl Carter Jr. (born October 1, 1924) is an American politician who served as the 39th president of the United States from 1977 to 1981. A member of the Democratic Party (United States), Democratic Party, he previously served as th ...
and
Vice-President A vice president, also director in British English, is an officer in government or business who is below the president (chief executive officer) in rank. It can also refer to executive vice presidents, signifying that the vice president is on t ...
George Bush George Bush most commonly refers to: * George H. W. Bush (1924–2018), 41st president of the United States and father of the 43rd president * George W. Bush (born 1946), 43rd president of the United States and son of the 41st president Georg ...
and in
Moscow Moscow ( , US chiefly ; rus, links=no, Москва, r=Moskva, p=mɐskˈva, a=Москва.ogg) is the capital and largest city of Russia. The city stands on the Moskva River in Central Russia, with a population estimated at 13.0 million ...
with Secretaries General
Leonid Brezhnev Leonid Ilyich Brezhnev; uk, links= no, Леонід Ілліч Брежнєв, . (19 December 1906– 10 November 1982) was a Soviet Union, Soviet politician who served as General Secretary of the Communist Party of the Soviet Union, Gener ...
and
Mikhail Gorbachev Mikhail Sergeyevich Gorbachev (2 March 1931 – 30 August 2022) was a Soviet politician who served as the 8th and final leader of the Soviet Union from 1985 to dissolution of the Soviet Union, the country's dissolution in 1991. He served a ...
. The SI's delegations to these discussions were led by the
Finnish Prime Minister The prime minister of Finland ( fi, Suomen pääministeri; ) is the leader of the Finnish Government. The prime minister and their cabinet exercise executive authority in the state. The prime minister is formally Finnish order of precedence, r ...
Kalevi Sorsa Taisto Kalevi Sorsa (21 December 1930 – 16 January 2004) was a 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 most day ...
. 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 Constitutional Democratic Rally was expelled from the SI in January 2011; later that month the
Egypt Egypt ( ar, مصر , ), officially the Arab Republic of Egypt, is a transcontinental country spanning the northeast corner of Africa and southwest corner of Asia via a land bridge formed by the Sinai Peninsula. It is bordered by the Mediter ...
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 which began after Laurent Gbagbo, the President of Ivory Coast since 2000, was proclaimed the winner of the Ivorian election of 2010, the first election in the country in 10 yea ...
, the Ivorian Popular Front 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, citing the 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 primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...
. For example, it did not denounce the
coup d'état A coup d'état (; French for 'stroke of state'), also known as a coup or overthrow, is a seizure and removal of a government and its powers. Typically, it is an illegal seizure of power by a political faction, politician, cult, rebel group, m ...
against Socialist President Jacobo Árbenz 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 Enciclopedia Virtual > Historia > Historia de Chile > Del gobierno militar a la democracia" on LaTercera.cl. Retrieved 22 September 2006. In October 1972, Chile suffered the first of many strikes. Among the par ...
that "a world we did not know" was discovered explained 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 President of France, serving under that position from 1981 to 1995, the longest time in office in the history of France. As First Secretary of the Socialist Party, he ...
, the SI supported the
Sandinistas The Sandinista National Liberation Front ( es, Frente Sandinista de Liberación Nacional, FSLN) is a socialist political party in Nicaragua. Its members are called Sandinistas () in both English and Spanish. The party is named after Augusto Cé ...
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 political party in Mexico. The PRD originated from the Democratic Current, a political faction formed in 1986 from the Institut ...
(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 and social-liberal political party in Argentina. It has been ideologically heterogeneous, ranging from social liberalism to social democracy. The UCR is a member of the So ...
(UCR); the Mexican Institutional Revolutionary Party (PRI), which was not very democratically in power for seventy years; the Colombian Liberal Party—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 who served as the 31st President of Colombia from 7 August 2002 to 7 August 2010. Uribe started his political career in his home department of Antioquia. He held offices in t ...
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.


Logo

The logo is the fist and rose, based on the 1977 design by
José María Cruz Novillo José María Cruz Novillo ( Cuenca, 1936) is a Spanish sculptor, engraver, painter and designer. Cruz Novillo began painting in his native town in 1950 and in 1958 moved to Madrid.. He designed many logos. Among them, that of the newspaper El ...
for the
Spanish Socialist Workers' Party The Spanish Socialist Workers' Party ( es, Partido Socialista Obrero Español ; PSOE ) is a social-democraticThe PSOE is described as a social-democratic party by numerous sources: * * * * political party in Spain. The PSOE has been in gov ...
, itself a variant of the logo of the French
Socialist Party Socialist Party is the name of many different political parties around the world. All of these parties claim to uphold some form of socialism, though they may have very different interpretations of what "socialism" means. Statistically, most of th ...
. Variants of the emblem are or were used by several SI member parties.


Presidents, honorary presidents and secretaries general


Presidents

*, there have been a total of 9 Socialist International presidents. *


Honorary presidents

Current and honorary presidents include: * Pierre Mauroy, 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, Brazil *
Rubén Berríos Rubén Ángel Berríos Martínez (born June 21, 1939) is a Puerto Rican politician, international law attorney, writer, and current president of the Puerto Rican Independence Party (PIP). A former three-time senator, Berríos is a perennial PI ...
, 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 from 2004 to 2009 for the French Community of Belgium with the Parti Socialiste, part of the Socialist Grou ...
, Belgium *
Cuauhtémoc Cárdenas Cuauhtémoc Cárdenas Solórzano (; born 1 May 1934) is a Mexican prominent politician. The son of 51st President of Mexico Lázaro Cárdenas, he is a former Head of Government of Mexico City and a founder of the Party of the Democratic Revolu ...
, Mexico *
Mohamed El Yazghi Mohamed El Yazghi ( ar, محمد اليازغي; born 1 January 1939) is a Moroccan politician and former head of the Socialist Union of Popular Forces party. He was born in Fes, Morocco, and holds the position of minister of state in the curren ...
, Morocco *
Alan García Alan Gabriel Ludwig García Pérez (; 23 May 1949 – 17 April 2019) was a Peruvian politician who served as President of Peru The president of Peru ( es, link=no, presidente del Perú), officially called the president of the Republic of ...
, Peru *
Anita Gradin Anita Gradin (12 August 1933 – 23 May 2022) was a Swedish politician and ambassador. She was the Minister with responsibility for immigrant and equality affairs at the Ministry of Labour in Sweden from 1982 to 1986. She was Minister of Foreig ...
, 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, 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 prime minister of Niger from 1993 to 1994, president of the National Assembly from 1995 t ...
, Niger * Anker Jørgensen, Denmark * Lionel Jospin, France * Neil Kinnock, United Kingdom *
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 co ...
, Colombia *
Enrique Silva Cimma Enrique Silva Cimma (November 11, 1918 – July 14, 2012) was a Chilean politician, academic and lawyer. Silva served as Foreign Minister of Chile from 1990 to 1994. In addition to a long political career, Silva taught at the University of Chile fo ...
, Chile * Mário Soares, Portugal * Hans-Jochen Vogel, Germany *


Secretaries general

*
Julius Braunthal Julius Braunthal (1891–1972) was an Austrian-born 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 of the ...
, Austria (1951–1956) *Bjarne Braatoy, Norway (1956–1957) *Albert Carthy, United Kingdom (1957–1969) *
Hans Janitschek Hans Janitschek (6 November 1934 – 21 February 2008) was an Austrian writer, a former Secretary General of the Socialist International, and the U.S. correspondent for the Austrian newspaper, the Kronen Zeitung. Early life Born on 6 November 19 ...
, Austria (1969–1976) * Bernt Carlsson, Sweden (1976–1983) *
Pentti Väänänen Pentti Väänänen (12 February 1945 – 17 July 2020) was a Finnish politician and Master of Laws from the Social Democratic Party of Finland (SDP). Career He was a Master of Laws. He worked in the Social Democratic Party of Finland as the s ...
, Finland (1983–1989) * Luis Ayala, Chile (1989–2022) *Benedicta Lasi, Ghana (2022-present)


Summits

* I
Frankfurt Frankfurt, officially Frankfurt am Main (; Hessian: , "Frank ford on the Main"), is the most populous city in the German state of Hesse. Its 791,000 inhabitants as of 2022 make it the fifth-most populous city in Germany. Located on its na ...
1951 * II
Milan Milan ( , , Lombard: ; it, Milano ) is a city in northern Italy, capital of Lombardy, and the second-most populous city proper in Italy after Rome. The city proper has a population of about 1.4 million, while its metropolitan city h ...
1952 * III
Stockholm Stockholm () is the Capital city, capital and List of urban areas in Sweden by population, largest city of Sweden as well as the List of urban areas in the Nordic countries, largest urban area in Scandinavia. Approximately 980,000 people liv ...
1953 * IV
London London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary down to the North Sea, and has been a majo ...
1955 * V
Vienna en, Viennese , iso_code = AT-9 , registration_plate = W , postal_code_type = Postal code , postal_code = , timezone = CET , utc_offset = +1 , timezone_DST ...
1957 * VI
Hamburg (male), (female) en, Hamburger(s), Hamburgian(s) , timezone1 = Central (CET) , utc_offset1 = +1 , timezone1_DST = Central (CEST) , utc_offset1_DST = +2 , postal ...
1959 * VII
Rome , established_title = Founded , established_date = 753 BC , founder = King Romulus (legendary) , image_map = Map of comune of Rome (metropolitan city of Capital Rome, region Lazio, Italy).svg , map_caption ...
1961 * VIII
Amsterdam Amsterdam ( , , , lit. ''The Dam on the River Amstel'') is the Capital of the Netherlands, capital and Municipalities of the Netherlands, most populous city of the Netherlands, with The Hague being the seat of government. It has a population ...
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, Bruss ...
1964 * X
Stockholm Stockholm () is the Capital city, capital and List of urban areas in Sweden by population, largest city of Sweden as well as the List of urban areas in the Nordic countries, largest urban area in Scandinavia. Approximately 980,000 people liv ...
1966 * XI
Eastbourne Eastbourne () is a town and seaside resort in East Sussex, on the south coast of England, east of Brighton and south of London. Eastbourne is immediately east of Beachy Head, the highest chalk sea cliff in Great Britain and part of the la ...
1969 * XII
Vienna en, Viennese , iso_code = AT-9 , registration_plate = W , postal_code_type = Postal code , postal_code = , timezone = CET , utc_offset = +1 , timezone_DST ...
1972 * XIII
Geneva Geneva ( ; french: Genève ) frp, Genèva ; german: link=no, Genf ; it, Ginevra ; rm, Genevra is the List of cities in Switzerland, second-most populous city in Switzerland (after Zürich) and the most populous city of Romandy, the French-speaki ...
1976 * XIV
Vancouver Vancouver ( ) is a major city in western Canada, located in the Lower Mainland region of British Columbia. As the List of cities in British Columbia, most populous city in the province, the 2021 Canadian census recorded 662,248 people in the ...
1978 * XV
Madrid Madrid ( , ) is the capital and most populous city of Spain. The city has almost 3.4 million inhabitants and a metropolitan area population of approximately 6.7 million. It is the second-largest city in the European Union (EU), and ...
1980 * XVI
Albufeira Albufeira () is a city and seat of its own municipality in the district of Faro, in the southernmost Portuguese region of Algarve. The municipality population in 2021 was 44,158, in an area of . The city proper had a population of 28,645 in 2021 ...
1983 * XVII
Lima Lima ( ; ), originally founded as Ciudad de Los Reyes (City of The Kings) is the capital and the largest city of Peru. It is located in the valleys of the Chillón River, Chillón, Rímac River, Rímac and Lurín Rivers, in the desert zone of t ...
1986 * XVIII
Stockholm Stockholm () is the Capital city, capital and List of urban areas in Sweden by population, largest city of Sweden as well as the List of urban areas in the Nordic countries, largest urban area in Scandinavia. Approximately 980,000 people liv ...
1989 * XIX
Berlin Berlin ( , ) is the capital and largest city of Germany by both area and population. Its 3.7 million inhabitants make it the European Union's most populous city, according to population within city limits. One of Germany's sixteen constitue ...
1992 * XX
New York City New York, often called New York City or NYC, is the List of United States cities by population, most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the L ...
1996 * XXI
Paris Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. S ...
1999 * XXII
São Paulo São Paulo (, ; Portuguese for 'Saint Paul') is the most populous city in Brazil, and is the capital of the state of São Paulo, the most populous and wealthiest Brazilian state, located in the country's Southeast Region. Listed by the GaWC a ...
2003 * XXIII
Athens Athens ( ; el, Αθήνα, Athína ; grc, Ἀθῆναι, Athênai (pl.) ) is both the capital and largest city of Greece. With a population close to four million, it is also the seventh largest city in the European Union. Athens dominates ...
2008 * XXIV
Cape Town Cape Town ( af, Kaapstad; , xh, iKapa) is one of South Africa's three capital cities, serving as the seat of the Parliament of South Africa. It is the legislative capital of the country, the oldest city in the country, and the second largest ...
2012 *XXV Cartagena 2017


Members


Full members

There are 92 full members:


Consultative parties

There are 19 consultative parties:


Observer parties

There are eight observer parties:


Former members


Fraternal organisations

* International Falcon Movement – Socialist Educational International *
Socialist International Women Socialist International Women is the international organization of the women's organizations of the socialist, social democratic and Labour movement, labour parties affiliated to the Socialist International. History The Women's International Co ...


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. The SFIO was found ...
*
Reformism Reformism is a political doctrine advocating the reform of an existing system or institution instead of its abolition and replacement. Within the socialist movement, reformism is the view that gradual changes through existing institutions can eve ...


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 Democratic socialism International Socialist Organisations 1951 establishments in Germany