The Stalin-Hitler Pact and the Imperialist War. Published by the Revolutionary Workers League, Demos Press, Chicago. 1939.
Contents: Introduction, The Background to the Pact, Hitler Won – Stalin Capitulated, In What Consists the New Betrayal?, The Line’s Been Changed Again, Effects of the Pact, Red Army Invades Poland, The Imperialist War. 18 pages.
Fighting Worker was the newspaper of the Revolutionary Workers League from 1936 until 1947. The RWL was a 1935 split from the Workers Party of the U.S. led by James Cannon and allied with the Movement for the Fourth Interntional led by Leon Trotsky. Led by Hugo Oehler and Tom Stamm, the RWL opposed the ‘French Turn’ then happening in world Trotskyism whereby national sections were joining left-moving Socialist Parties. Fighting Worker and the RWL at first positioned themselves as oppositional Trotskyists, but by 1938 refuted Trotsky and his international movement as “degenerate.’, the exact date of Trotsky’s degeneration causing an organizational split between the group’s founders and, for a time, two rival Revolutionary Workers Leagues with papers called Fighting Worker. Oehler went to Spain to make contact with the POUM but was arrested during their suppression. Declaring a rival Provisional International Contact Commission for the New Communist (Fourth) International in 1938, they briefly joined with the Leninist League (UK) and the Revolutionary Communist Organization (Austria). Fighting Worker would be published monthly and then every two weeks in Chicago and New York. After suffering a series of splits in the late 1930s, including of Tom Stamm, the RWL went into decline and Fighting Worker ceased publishing entirely in 1947. In addition to Fighting Worker, the RWL published local, labor, and theoretical papers.
PDF of pamphlet: https://www.marxists.org/history/etol/document/rwl/pamphlets/Stalin-Hitler-pact-1939.pdf