People's Socialist Revolutionary Party (Basque: Herri Alderdi Sozialista Iraultzailea; HASI) was a non-legal Basque political party, considered commonly to be the political branch of ETA. It always ran as part of the coalition of the Basque National Liberation Movement, Herri Batasuna, until its self-dissolution in the 1990s. The party's acronym "HASI" means "to begin" in Basque language.

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Quick Facts President, Secretary-General ...

People's Socialist Revolutionary Party Herri Alderdi Sozialista Iraultzailea
President	Santiago Brouard (1978-1984)
Secretary-General	Alberto Figueroa (1977-1978) Txomin Ziluaga (1979-1989)
Founded	5 July 1979 (1979-07-05)[1]
Dissolved	1992 (1992)
Merger of	Euskal Herriko Alderdi Sozialista (EHAS) Eusko Sozialistak (ES)
Youth wing	Jarrai
Ideology	Basque independence Communism Marxism-Leninism Abertzale Left
Political position	Far-left
National affiliation	Herri Batasuna Koordinadora Abertzale Sozialista
Politics of Basque Country

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