International Socialist Alternative

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International Socialist Alternative

Predecessor	Committee for a Workers' International (1974)
Formation	1 February 2020
Type	Association of Trotskyist political parties
Headquarters	Hovenierstraat 45, 1080 Molenbeek, Brussels, Belgium
Region served	Worldwide
Leader	Collective leadership
Website	internationalsocialist.net

International Socialist Alternative (ISA) is an international association of Trotskyist political parties.

ISA was founded by sections on one side of a split in the Committee for a Workers' International (CWI).