Once the communist party, that is, Joseph Stalin, had come to its conclusion, it could not be debated.
So when Stalin announced that the first five-year plan announced in 1928 actually had to be completed in 4 years,
it was officially declared complete in 1932, a second five-year plan started.
In the middle 1930's, the communist party line dictated that Nazi Germany and fascist Italy were
the two pillars of the evil empire and must be fought accordingly.
Indeed, the USSR fought the Spanish Civil War of 1936 through 1939 as a proxy war against Germany and Italy.
But when on the eve of the Second World War,
Stalin thought, "Well, maybe I will sign a treaty with Nazi Germany", the communist party line was changed.
Now Germany and Italy were wonderful and all the capitalist western powers were bad.
Communist parties around the world, all of which took their marching orders of the Communist International, or Comintern, in Moscow,
set a world record for the most crow eaten overnight.
Realizing, however, what happened to people who Stalin got mad at, even foreign communists were terrified of crossing Stalin's party lines.