You would not last long in the SU,very quickly you would visit the Loebianka hotel (which was not that luxurious as the Huntsville hotel) : you continue to argue as an American,immersed in 40 years Cold War propaganda, and not as a communist . What you describe is correct, but your conclusions are not correct .What the Kremlin was observing was a German expansion ...against which there was no Western reaction,they observed also the refusal of the West to draw the SU in the European affairs (the opinion outside the USSR was : the USSR is good were it is,but they are no gentlemen :no need to do political business with them :the USSR was in quarantine).And now, suddenly , some subordinate Western delegates went to Moscow with the message : can we expect your intervention,if we need it ? Will you do the fighting against Germany if needed ? And on the Soviet reply : what will you do ? The British answer was : we will send 2 divisions and the French said ...blahblah (later they started a small offensive in the Saar). At least,the Germans sent someone important :Ribbentrop. And when the Soviets said : to help Poland, we need to enter Poland, the Western answer was : this is out of the question . Conclusion : the opinion of the Kremlin was that it was a trick and that the West wanted the SU risking a war to save Poland and if there was a war, that the SU would fight for the interests of the City .Thus, it was very unwise to expect that Stalin would fight for the City . Britain and France did not need him at Munich, thus why should he present himself now ? If Britain and France were strong, they did not need him, if they need him, they were weak . Reality was that they wanted him to prevent WWII, which was not the business of Stalin .