Labour and Socialist International (Twilight of a New Era)

The Labour and Socialist International (LSI) is an international organization of socialist and labour parties. The LSI was created in 1924 has successor and continuation of the dissolve II International. During World War I, socialist parties where divided between pacism and participation of the war effort. The Russian revolution of 1918 further divided fragmented parties between revolutionaries and reformists. The founding Congress of the LSI (1924), promoted international cooperation.

Afiliated of fraternal organizations are:
 * SASI (1920-1936), SASI-Sportintern (1936 to date)
 * International Federation of Trade Unions
 * International Socialist Women's Federation
 * Socialist Youth International
 * Social-Democrat League of Russia and Eastern Europe

Member parties
Some notable members where:
 * Socialist Party of Argentina
 * Social Democratic Workers Party of Austria
 * Belgian Labour Party
 * Social Democratic Federation (Denmark)
 * Estonian Socialist Workers Party
 * Social Democratic Party (Finland)
 * French Section of the Workers International (SFIO)
 * Social Democratic Party of Germany
 * Social Democratic Party of East Prussia
 * Labour Party (UK)
 * Independent Labour Party (UK)
 * Hungarian Social Democratic Party
 * Social Democratic Workers Party (Netherlands)
 * Norwegian Labour Party
 * Spanish Socialist Workers Party
 * Social Democratic Labour Party of Sweden
 * Socialist Party of Yugoslavia