Socialist Workingmen's Party
Considering the internationalist struggle indispensable, the SEP has carried out theoretical productions and practical organizational activities in order to build a new international since the beginning of the tradition. The party was among the founders of the International Socialist Union (ISL), whose founding steps were taken at the 2019 Barcelona Conference. SEP left ISL in September 2022 due to the NATOist tendencies of Argentina-MST, one of the three main sections of ISL, and the Ukrainian nationalist statements and actions of the leader of the Ukrainian section. SEP explains the detailed reasons for leaving ISL in "Letter to ISL Members: Why Did We Leave ISL?" published his article. In this process, party theorists produced theoretical explanations about the imperialist rivalry in the world and the US-China tension.