Why draw the line of causation there? That seems a bit ridiculous. France had issued the same ultimatum, and declared war just a few hours later. Both France a

Why draw the line of causation there? That seems a bit ridiculous. France had issued the same ultimatum, and declared war just a few hours later. Both France and Britian were obligated by treaty to defend Poland. Germany started the conflict, and knew full well that they would force other countries to get involved. To claim otherwise is counter-factual. If you punch a police officer in his face, and his partner knocks you out, you can't claim the partner started the fight.