However, unlike the Comintern, the LSI maintained no direct control over the actions of its sections, being constituted as a federation of autonomous national parties.

[1] This initiative finally came to a close at the end of the year with the convocation of the 4th World Congress of the Comintern, which decisively rejected calls for a broad and inclusive international body.

[1] Planning for such a body began in January 1923, a month after the conclusion of the Comintern's 4th World Congress, with the Executive Committees of the Vienna and London groups issuing a joint statement condemning the Communists' decision.

[2] The gathering was dominated by 80 delegates of the Social Democratic Party of Germany (SPD), including among its membership such esteemed leaders of the international socialist movement as Karl Kautsky, Eduard Bernstein, and Rudolf Hilferding.

"[2] Total agreement on fundamental principles was not expected "at the moment of its birth," but the desire was voiced that establishment of the new international body would over time serve as "one of the most important conditions for the harmonizing of their views.

"[2] The LSI was to remain a federation of fully independent and autonomous political parties — groups which were freely allowed under organizational statutes to determine their own internal policies and programs.

On 19 February 1933, the LSI Bureau issued a call for joint action of the SPD and the Communist Party of Germany against Adolf Hitler's regime.

[11] The LSI/IFTU relief efforts were channelled through the Spanish Socialist Workers' Party (PSOE) and Unión General de Trabajadores (UGT).