Timeline:
-First Founding Congress of comintern held March 1919, 50 delegates from a range of countries came, optimism about spread of revolution especially in Germany with Spartacist uprising
-Second Comintern Congress- July-AUG 1920- during height of Russo-Polish war
debates over lenin's '21 conditions' caused countries to start leaving, Last-gasp polish win stopped springboard of communism, However, Bolshevik control still strong following Civil War win.
Third Comintern Congress summer 1921- world revolution clearly not achievable, communist regimes crushed, all russia comintern, Bolshevik Russia alone in capitalist world