In the background of Hitler’s mind throughout Operation Barbarossa and what followed was the thought that the rapid defeat of the Soviet Union would also bring about the capitulation of the British. The attempt to bomb the British into submission in 1940 had clearly failed. But there were other ways of bringing them to the negotiating table. Chief among these was the disruption of their supplies, which by necessity had to come by sea, partly from Britain’s far-flung Empire, but principally from the United States.
