Not sure how that works, Germany is not going to leave Poland alone. The Whole Polish Corridor/Danzig thing.
IF they leave Poland alone the attack route into the Soviet Union is from Romania.
And if they attack through Rumania, a French client in 1939 also bankrolled by Britain and given gurantees of protection like all the other minor European neutrals , they run foul of th franco british alliance. After the gurantees given to Poland (which was in effect even before the formal announcement), Germany will be at war with Britain and France. If you want to rewind history to before munich, whare are you going to go????? This is a pointless and very silly line of argument to be pursuing in my view...…..how does a Tiger lose its stripes?
We are right back where we started
After Munich nobody trusted germany, and nobody was prepared to make any more concessions. Hitlers lying and bullying wewre catching up with him. Stalin entertained a revival of the old entente with the west, which was initially ignored but at the last minute Britain wanted to revive as well. By the time the aallies woke up to the possibilities of a Russian alliance it was too late, and the Russians had made separate (and catastrophicv) arrangements with the germans
Germany was seen as public enemy number 1, the USSR was an annoying distraction a backwater essentially. Any attack on Russia has to go through neutral states.....the Baltic is covered by Lithuania, Latvia and Estonia, all of whom sought some form of solace from the allied powers.
Germany after Munich is an isolated state. She was winning, but this 'victory came at the cost of being isolated, and worse on an ustoppable collision course with France and Britain. Everybody knew it was coming though different nations reacted in different ways. The US hoped to saty out of it, and profit by selling guns to everyone, the neutral formed a separate bloc, seeking the protection of the remaining great power supporters of the League, but feigniing neutrslity to avoid war at all costs. They couldn't, mostly because at various times they found themselves in the way. Britain spent most of the time in the lead up to war, runningaround Europe writing cheques she could not honour, playing for time, and making valiant attempts to contain Germany. The aim was no longer appeasement with a road to peace, it was delay with a road to war, and anyone who wouold side with Britain to stop the germans were friends of the British.
Any other appraisal of this is living in a dreamworld.