Henri McPhee
Illuminator
Hitler declared war on Dec 11 1941. I wonder about two things:
First, did he know that Barbarossa had failed by then? Was he being fed false information, or did he simply choose to believe otherwise. It seems to be a stunning example of insane megalomania to believe that Germany (and minor powers) could defeat the British Empire, the Soviet Union, and the USA all at once.
I think Hitler intended, and hoped, that Barbarossa would be over by Christmas and that he could then use his blitzkrieg tactics in Soviet Russia in the same way as in France. He had made no plans for winter clothing for his army. He suddenly came up against General Mud and General Russian Winter and a Russian counter attack at Moscow at about the same time as he declared war on America. In other words he became bogged down.
Hitler seems to have had plans to overthrow democracy in America and install a pro-Nazi government with the backing of the Irish Americans, and German Americans. Somebody, though I can't provide a reference, once wrote a fiction book in which Charles Lindbergh became president, supported by the pro-Nazi wealthy manufacturer Henry Ford.