How feasible will it be to stop Germany before the world goes to war? Is it possible for the political will to be there?
Political will was the main issue. It's not 'before the war' but from Wikipedia on the Phoney War:
At the Nuremberg Trials, German military commander Alfred Jodl said that "if we did not collapse already in the year 1939 that was due only to the fact that during the Polish campaign, the approximately 110 French and British divisions in the West were held completely inactive against the 23 German divisions."[12]
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