With all the aggressive foreign policy that led to the appeasement of the late 1930s, Germany became somewhat of a black sheep of diplomacy. Then, the original black sheep of the time period, Soviet Russia, agreed to a pact with Nazi Germany, which all of the West shunned and considered "unnatural." In the eyes of the Western powers, it lumped Russia in with Germany. Now we all know about Hitler's demands, they eventually drifted to Danzig, with him wanting the Danzig corridor back into the German Reich. This is where common ground could have lead Germany and Poland to an agreement, because Poland hated Russia and Communism just as much as Hitler, and the Western powers disliked Communism just as much. Playing economic blocs off each other, such as Nazism and Soviet Communism, or the Cold War, is desirable for the power structures of said blocs. If Poland and Germany reached an agreement over Danzig whereby they didn't fight, and they cooperated much like they did with Russia on certain things, and German troops were allowed in to Poland, and Germany eventually attacked Russia without Poland getting involved, would the Western powers have still declared war on Germany, or since it was Communist Russia and they made the pact with Germany to begin with, and the Western power structure hated Communism, would they have left those two to fight themselves out and not get involved?