Good points, Otto & Friedrich. Wasn't von Mellenthin another supporter of the Mediterranean strategy? Or was it Guderian? I think it was Guderian actually, but I can't remember. Or maybe he was saying that with the benefit of hindsight.

But a well-planned and coordinated assault on Malta (and maybe also Gibraltar) and a true German army in Africa under a capable general (perhaps Rommel, perhaps also somebody like Manstein). Spanish and Turkish entry into the war could be achieved, after that Iraq and Iran might join. Both countries fought against the Allies as it was, so they might have joined the Axis.

Meanwhile the Germans stand defensive in the East. Possible.

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„Solange man nicht mit dem Kopf unterm Arm rumläuft geht es doch noch!" Erwin Rommel