Don't forget the Polish aggression near the German border in land that was German until after WWI, including a massacre of ethnic Germans in Bromberg.
Oh, and Judea declared war on Germany prior to this simply because German boycotted jewish products.
Oh, and France and Great Britain didn't declare war on Russia even though Russia invaded Poland from the east in a coordinated military effort exactly at the same time Germany invaded from the west, after all of these acts of aggression and a literal declaration of war from Judea (which was under British stewardship at the time).
Now let's talk about Mandatory Palestine.
Oh, and who could forget the jewish Bolshevik civil war in Germany in 1918-1919?
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