Idealistic criticisms of the Molotov-Ribbentrop Pact are common, but to say that materialistic critiques of it is impossible is plain wrong.

• The M/R Pact marked a reversal of the Comintern line from one of Anti-Fascism to one of implicit cooperation. This lead to the disillusionment of a great deal of formerly committed Communists, and a weakening of global Anti-Fascism, and Communist Parties.

• It's very arguable that Nazi Germany benefited far more from the economic components of the M/R Pact, than the Soviet Union. They were deeply reliant on Soviet resources to fuel its conquest (like 60-80% of their total imports in 1940-41 came from the USSR ), and later; Operation Barbarossa. The Third Reich only paid out a third of what it promised, while the Soviet Union supplied the full quantity of resources demanded.

• Furthermore, the M/R Pact ended American arms supplies to the USSR. The Red Army was far more dependent on American,not German, arms for their rearmament programs.

• Contrary to the idea that the M/R Pact was only a decision of realpolitik to better prepare for War with the Third Reich, it instead induced a degree of complacency in Soviet Leadership, to the point that the Red Army divisions on the border were deeply unprepared (and only partially mobilized) during the initial stages of Operation Barbarossa. And Stalin was similarly shocked by the Nazi invasion, despite him being warned of it's imminent possibility by reliable sources dozens of times prior.